#0A1925
Closest named color: Rich Black (#0D1B2A). oklch(20.7% 0.032 244.3), rgb(10, 25, 37).
Aa
White text reads best on this color (17.81:1).
About this color
#0A1925 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.032 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.012 away. White text reads best on it, at 17.81:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.81:1 |
Values
| HEX | #0A1925 |
| RGB | rgb(10, 25, 37) |
| HSL | hsl(207, 57%, 9%) |
| OKLCH | oklch(20.7% 0.032 244.3) |
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 #0A1925 | 17.81:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #0A1925 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #0A1925 text on white | 17.81:1 | AAA | Lc 104.5 | Preferred for body text |
| #0A1925 text on black | 1.17:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D8
oklch(80.9% 0.038 244.5)
-
Step 400
400
#81A5C4
oklch(70.6% 0.06 244.8)
-
Step 500
500
#608FB5
oklch(63.1% 0.077 243.8)
-
Step 600
600
#4678A1
oklch(55.5% 0.084 244.9)
-
Step 700
700
#37658A
oklch(49.1% 0.078 244.6)
-
Step 800
800
#2E5370
oklch(42.8% 0.064 243.8)
-
Step 900
900
#2A445A
oklch(37.6% 0.05 245.2)
-
Step 950
950 (this color)
#0A1925
oklch(20.7% 0.032 244.3)
#0A1925 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) | #141926 | 0.015 |
| Deuteranopia (no green cones) | #101625 | 0.013 |
| Tritanopia (no blue cones) | #001C1D | 0.026 |
| Achromatopsia (no color) | #181818 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1925
#0A1925
oklch(20.7% 0.032 244.3)
- #221407
#221407
oklch(20.7% 0.033 62.9)
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 #0A1925, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.012
- Rich Navy #001219 ΔE 0.039
- Dark #1B2431 ΔE 0.052
- Jet #212529 ΔE 0.060
- Almost Black #070D0D ΔE 0.060
- Oxford Blue #1B263B ΔE 0.064
- Navy Blue #001146 ΔE 0.073
- Dark Navy #000435 ΔE 0.081
Use #0A1925 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.