#043F58 Color

#043F58 is rgb(4, 63, 88) in RGB, hsl(198, 91%, 18%) in HSL, and about cmyk(95%, 28%, 0%, 65%) in CMYK. It has no registered color name of its own — the closest is Prussian Blue (#003153), clearly related but distinguishable side by side at ΔE 9.59. White text is the more readable choice on this background.

#043F58

HEX#043F58

RGBrgb(4, 63, 88)

HSLhsl(198, 91%, 18%)

HSVhsv(198, 95%, 35%)

CMYKcmyk(95%, 28%, 0%, 65%)

OKLCHoklch(34.7% 0.07 233.6)

LABlab(24.26% -10.18 -20.32)

LCHlch(24.26% 22.72 243.38)

What #043F58 Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #043F58, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Prussian Blue#003153ΔE 9.59 Deep Teal#003B46ΔE 9.62 Indigo Dye#00416AΔE 10.49 Police Blue#374F6BΔE 11.01 Midnight Green(eagle Green)#004953ΔE 11.63 Japanese Indigo#264348ΔE 13.8

Browse the full index of named colors A-Z or every teal in the library.

#043F58 Channel Values

How #043F58 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 4 · G 63 · B 88	8-bit channels as sent to the display
HSL	H 198° · S 91% · L 18%	Easiest model for building lighter and darker variants
HSV	H 198° · S 95% · V 35%	Matches the picker in most design tools
CMYK	C 95% · M 28% · Y 0% · K 65%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	11.31:1 vs white · 1.86:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #043F58 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text11.31:1AA normal AA large AAA normal

Fails AABlack text1.86:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #043F58 in the contrast checker.

Colors That Go With #043F58

Pairings derived from color-wheel relationships. The complementary color sits opposite #043F58; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #043F58

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #043F58.

How #043F58 Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#043F58

Protanopia#393958

Protanomaly#2C3C58

Deuteranopia#333359

Deuteranomaly#273858

Tritanopia#004343

Tritanomaly#00414C

Achromatopsia#3A3A3A

Test a full palette in the color blindness simulator.

Using #043F58 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-043f58: #043F58;

CSS backgroundbackground-color: #043F58;

Tailwind configcolors: { 'color-043f58': '#043F58' }

SwiftUIColor(red: 0.016, green: 0.247, blue: 0.345)

Android XML<color name="color_043f58">#043F58</color>

SVG fillfill="#043F58"

More Teal Colors

#043F58 sits in the teal family. These are its neighbours across that family's full range, each with its own breakdown.

002424 f5ffff 002a38 f0ffff 002d2e eefbfb 003333 ecfeff 003542 ecf7f9 003838 ebffff 006466 009999 00ebeb 0d1616 192929 24fbff 36747d 50bfe6 73a9c2 8dd9cc aec6cf ccffff

#043F58 Frequently Asked Questions

What color is #043F58?

#043F58 is a darkest teal — rgb(4, 63, 88) in RGB and hsl(198, 91%, 18%) in HSL. It carries no registered color name of its own; the closest named color is Prussian Blue (#003153), which is clearly related but distinguishable side by side at a CIE76 distance of 9.59.

What is the RGB value of #043F58?

#043F58 is rgb(4, 63, 88) — red 4, green 63, and blue 88 on the 0-255 scale.

What is the CMYK value of #043F58?

#043F58 converts to approximately cmyk(95%, 28%, 0%, 65%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #043F58 be black or white?

White text is the more readable choice. #043F58 scores 11.31:1 against white and 1.86:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #043F58 as a CSS color keyword?

No. #043F58 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is darkslategray (#2F4F4F) at a CIE76 distance of 17.89, which is visibly different.

Open #043F58 in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every teal in the color library, the guide to shades of teal, or the full color library.