#151925
Closest named color: Rich Black (#0D1B2A). oklch(21.5% 0.025 270), rgb(21, 25, 37).
Aa
White text reads best on this color (17.53:1).
About this color
#151925 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.015 away. White text reads best on it, at 17.53:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.53:1 |
Values
| HEX | #151925 |
| RGB | rgb(21, 25, 37) |
| HSL | hsl(225, 28%, 11%) |
| OKLCH | oklch(21.5% 0.025 270) |
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 #151925 | 17.53:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #151925 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #151925 text on white | 17.53:1 | AAA | Lc 104.4 | Preferred for body text |
| #151925 text on black | 1.19:1 | 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
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#B9C0D4
oklch(80.9% 0.029 270.3)
-
Step 400
400
#95A0BE
oklch(70.7% 0.046 269.4)
-
Step 500
500
#7B88AE
oklch(63% 0.059 270)
-
Step 600
600
#64729A
oklch(55.6% 0.065 269.3)
-
Step 700
700
#535F83
oklch(49% 0.06 269.9)
-
Step 800
800
#444E6B
oklch(42.7% 0.05 269.5)
-
Step 900
900
#394157
oklch(37.7% 0.039 269)
-
Step 950
950 (this color)
#151925
oklch(21.5% 0.025 270)
#151925 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) | #151A26 | 0.004 |
| Deuteranopia (no green cones) | #141925 | 0.002 |
| Tritanopia (no blue cones) | #101B1D | 0.022 |
| Achromatopsia (no color) | #191919 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151925
#151925
oklch(21.5% 0.025 270)
- #1E190C
#1E190C
oklch(21.5% 0.024 89.2)
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 #151925, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.015
- Dark #1B2431 ΔE 0.043
- Jet #212529 ΔE 0.050
- Rich Navy #001219 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.057
- Almost Black #070D0D ΔE 0.067
- Navy Blue #001146 ΔE 0.078
- Very Dark Purple #2A0134 ΔE 0.085
Use #151925 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.