#0A151E
Closest named color: Rich Navy (#001219). oklch(19% 0.024 244.3), rgb(10, 21, 30).
Aa
White text reads best on this color (18.43:1).
About this color
#0A151E is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.024 away. White text reads best on it, at 18.43:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.43:1 |
Values
| HEX | #0A151E |
| RGB | rgb(10, 21, 30) |
| HSL | hsl(207, 50%, 8%) |
| OKLCH | oklch(19% 0.024 244.3) |
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 #0A151E | 18.43:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #0A151E | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #0A151E text on white | 18.43:1 | AAA | Lc 105.0 | Preferred for body text |
| #0A151E text on black | 1.13:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE3
oklch(88.6% 0.015 241.8)
-
Step 300
300
#B2C3D2
oklch(80.9% 0.028 244.8)
-
Step 400
400
#89A4BC
oklch(70.6% 0.046 245.3)
-
Step 500
500
#6B8EAB
oklch(63.1% 0.059 243.9)
-
Step 600
600
#527897
oklch(55.7% 0.065 243.9)
-
Step 700
700
#436580
oklch(49.2% 0.059 243.3)
-
Step 800
800
#375268
oklch(42.7% 0.049 243.9)
-
Step 900
900
#304455
oklch(37.7% 0.039 244.7)
-
Step 950
950 (this color)
#0A151E
oklch(19% 0.024 244.3)
#0A151E 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) | #11151E | 0.011 |
| Deuteranopia (no green cones) | #0F131E | 0.010 |
| Tritanopia (no blue cones) | #031718 | 0.020 |
| Achromatopsia (no color) | #141414 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A151E
#0A151E
oklch(19% 0.024 244.3)
- #1B1108
#1B1108
oklch(18.8% 0.024 63)
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 #0A151E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.024
- Rich Black #0D1B2A ΔE 0.030
- Almost Black #070D0D ΔE 0.042
- Dark #1B2431 ΔE 0.068
- Jet #212529 ΔE 0.074
- Dark Navy #000435 ΔE 0.079
- Oxford Blue #1B263B ΔE 0.082
- Navy Blue #001146 ΔE 0.082
Use #0A151E 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.