#283439 Color

#283439 is rgb(40, 52, 57) in RGB, hsl(198, 18%, 19%) in HSL, and about cmyk(30%, 9%, 0%, 78%) in CMYK. It has no registered color name of its own — the closest is Gunmetal (#2A3439), indistinguishable to the eye at ΔE 0.86. White text is the more readable choice on this background.

#283439

HEX#283439

RGBrgb(40, 52, 57)

HSLhsl(198, 18%, 19%)

HSVhsv(198, 30%, 22%)

CMYKcmyk(30%, 9%, 0%, 78%)

OKLCHoklch(31.6% 0.018 225.2)

LABlab(20.76% -4.15 -4.91)

LCHlch(20.76% 6.43 229.80)

What #283439 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 #283439, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Gunmetal#2A3439ΔE 0.86 Outer Space (Crayola)#2D383AΔE 2.74 Traffic Black#2A2D2FΔE 5.12 Charcoal Black#232B2BΔE 5.46 Onyx#353839ΔE 5.46 Jet#343434ΔE 6.5

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

#283439 Channel Values

How #283439 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 40 · G 52 · B 57	8-bit channels as sent to the display
HSL	H 198° · S 18% · L 19%	Easiest model for building lighter and darker variants
HSV	H 198° · S 30% · V 22%	Matches the picker in most design tools
CMYK	C 30% · M 9% · Y 0% · K 78%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	12.8:1 vs white · 1.64:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #283439 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 text12.8:1AA normal AA large AAA normal

Fails AABlack text1.64:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #283439 in the contrast checker.

Colors That Go With #283439

Pairings derived from color-wheel relationships. The complementary color sits opposite #283439; 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 #283439

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 #283439.

How #283439 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#283439

Protanopia#323239

Protanomaly#2E3339

Deuteranopia#303039

Deuteranomaly#2D3239

Tritanopia#273535

Tritanomaly#273436

Achromatopsia#323232

Test a full palette in the color blindness simulator.

Using #283439 in Code

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

CSS custom property--color-283439: #283439;

CSS backgroundbackground-color: #283439;

Tailwind configcolors: { 'color-283439': '#283439' }

SwiftUIColor(red: 0.157, green: 0.204, blue: 0.224)

Android XML<color name="color_283439">#283439</color>

SVG fillfill="#283439"

More Teal Colors

#283439 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

#283439 Frequently Asked Questions

What color is #283439?

#283439 is a darkest teal — rgb(40, 52, 57) in RGB and hsl(198, 18%, 19%) in HSL. It carries no registered color name of its own; the closest named color is Gunmetal (#2A3439), which is indistinguishable to the eye at a CIE76 distance of 0.86.

What is the RGB value of #283439?

#283439 is rgb(40, 52, 57) — red 40, green 52, and blue 57 on the 0-255 scale.

What is the CMYK value of #283439?

#283439 converts to approximately cmyk(30%, 9%, 0%, 78%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #283439 be black or white?

White text is the more readable choice. #283439 scores 12.8:1 against white and 1.64:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #283439 as a CSS color keyword?

No. #283439 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 13.21, which is visibly different.

Open #283439 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.