#151A51 Color
#151A51 is rgb(21, 26, 81) in RGB, hsl(235, 59%, 20%) in HSL, and about cmyk(74%, 68%, 0%, 68%) in CMYK. It has no registered color name of its own — the closest is Sapphire Navy (#082567), clearly related but distinguishable side by side at ΔE 8.77. White text is the more readable choice on this background.
#151A51rgb(21, 26, 81)hsl(235, 59%, 20%)hsv(235, 74%, 32%)cmyk(74%, 68%, 0%, 68%)oklch(25.4% 0.099 273)lab(12.00% 14.41 -35.14)lch(12.00% 37.98 292.30)What #151A51 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 #151A51, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.
Browse the full index of named colors A-Z or every blue in the library.
#151A51 Channel Values
How #151A51 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 21 · G 26 · B 81 | 8-bit channels as sent to the display |
| HSL | H 235° · S 59% · L 20% | Easiest model for building lighter and darker variants |
| HSV | H 235° · S 74% · V 32% | Matches the picker in most design tools |
| CMYK | C 74% · M 68% · Y 0% · K 68% | Approximate ink mix; confirm with an ICC profile before printing |
| Luminance | 16.17:1 vs white · 1.3:1 vs black | WCAG 2.2 relative-luminance contrast ratios |
Text Contrast & Accessibility
WCAG 2.2 contrast ratios for text on a #151A51 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.
Need a specific ratio against another background? Open #151A51 in the contrast checker.
Colors That Go With #151A51
Pairings derived from color-wheel relationships. The complementary color sits opposite #151A51; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.
Tints & Shades of #151A51
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.
Want a full 50-950 ramp with semantic roles? Generate design tokens from #151A51.
How #151A51 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.
#151A51#191951#181A51#181851#171951#002626#07223C#212121Using #151A51 in Code
Copy-ready declarations for the places this color usually ends up.
--color-151a51: #151A51;background-color: #151A51;colors: { 'color-151a51': '#151A51' }Color(red: 0.082, green: 0.102, blue: 0.318)<color name="color_151a51">#151A51</color>fill="#151A51"More Blue Colors
#151A51 sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.
#151A51 Frequently Asked Questions
What color is #151A51?
#151A51 is a dark blue — rgb(21, 26, 81) in RGB and hsl(235, 59%, 20%) in HSL. It carries no registered color name of its own; the closest named color is Sapphire Navy (#082567), which is clearly related but distinguishable side by side at a CIE76 distance of 8.77.
What is the RGB value of #151A51?
#151A51 is rgb(21, 26, 81) — red 21, green 26, and blue 81 on the 0-255 scale.
What is the CMYK value of #151A51?
#151A51 converts to approximately cmyk(74%, 68%, 0%, 68%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.
Should text on #151A51 be black or white?
White text is the more readable choice. #151A51 scores 16.17:1 against white and 1.3:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.
Can I write #151A51 as a CSS color keyword?
No. #151A51 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 midnightblue (#191970) at a CIE76 distance of 19.75, which is visibly different.
Open #151A51 in a Tool
Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.