#151A25
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.023 265.6), rgb(21, 26, 37).
Aa
White text reads best on this color (17.40:1).
About this color
#151A25 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 17.40:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.40:1 |
Values
| HEX | #151A25 |
| RGB | rgb(21, 26, 37) |
| HSL | hsl(221, 28%, 11%) |
| OKLCH | oklch(21.8% 0.023 265.6) |
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 #151A25 | 17.40:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #151A25 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #151A25 text on white | 17.40:1 | AAA | Lc 104.3 | Preferred for body text |
| #151A25 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D3
oklch(81% 0.027 264.4)
-
Step 400
400
#94A1BD
oklch(70.8% 0.044 265.6)
-
Step 500
500
#7989AC
oklch(63% 0.056 265.6)
-
Step 600
600
#627397
oklch(55.6% 0.06 264.9)
-
Step 700
700
#516081
oklch(49% 0.056 265.5)
-
Step 800
800
#434F69
oklch(42.8% 0.046 265.3)
-
Step 900
900
#384155
oklch(37.6% 0.036 265.8)
-
Step 950
950 (this color)
#151A25
oklch(21.8% 0.023 265.6)
#151A25 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) | #161B25 | 0.004 |
| Deuteranopia (no green cones) | #151925 | 0.004 |
| Tritanopia (no blue cones) | #101C1E | 0.020 |
| Achromatopsia (no color) | #1A1A1A | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151A25
#151A25
oklch(21.8% 0.023 265.6)
- #1F190E
#1F190E
oklch(21.7% 0.022 82.2)
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 #151A25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.014
- Dark #1B2431 ΔE 0.040
- Jet #212529 ΔE 0.046
- Rich Navy #001219 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.055
- Almost Black #070D0D ΔE 0.069
- Navy Blue #001146 ΔE 0.080
- Dark Brown #341C02 ΔE 0.084
Use #151A25 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.