#151A27
Closest named color: Rich Black (#0D1B2A). oklch(21.9% 0.027 267.9), rgb(21, 26, 39).
Aa
White text reads best on this color (17.37:1).
About this color
#151A27 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.013 away. White text reads best on it, at 17.37:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.37:1 |
Values
| HEX | #151A27 |
| RGB | rgb(21, 26, 39) |
| HSL | hsl(223, 30%, 12%) |
| OKLCH | oklch(21.9% 0.027 267.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #151A27 | 17.37:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #151A27 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #151A27 text on white | 17.37:1 | AAA | Lc 104.2 | Preferred for body text |
| #151A27 text on black | 1.20:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B8C0D6
oklch(80.9% 0.032 269.8)
-
Step 400
400
#93A0C1
oklch(70.7% 0.051 268.2)
-
Step 500
500
#7888B1
oklch(62.9% 0.065 268)
-
Step 600
600
#61729D
oklch(55.6% 0.07 267.5)
-
Step 700
700
#515F86
oklch(49% 0.065 268.8)
-
Step 800
800
#424E6D
oklch(42.7% 0.054 267.8)
-
Step 900
900
#384158
oklch(37.7% 0.041 267.9)
-
Step 950
950 (this color)
#151A27
oklch(21.9% 0.027 267.9)
#151A27 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #161B28 | 0.004 |
| Deuteranopia (no green cones) | #141927 | 0.004 |
| Tritanopia (no blue cones) | #101D1F | 0.024 |
| Achromatopsia (no color) | #1A1A1A | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151A27
#151A27
oklch(21.9% 0.027 267.9)
- #201A0B
#201A0B
oklch(22% 0.028 88.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #151A27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.013
- Dark #1B2431 ΔE 0.039
- Jet #212529 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.052
- Rich Navy #001219 ΔE 0.055
- Almost Black #070D0D ΔE 0.072
- Navy Blue #001146 ΔE 0.076
- Very Dark Purple #2A0134 ΔE 0.085
Use #151A27 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.