#031825
Closest named color: Rich Black (#0D1B2A). oklch(19.9% 0.038 237.9), rgb(3, 24, 37).
Aa
White text reads best on this color (18.08:1).
About this color
#031825 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.038 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 18.08:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.08:1 |
Values
| HEX | #031825 |
| RGB | rgb(3, 24, 37) |
| HSL | hsl(203, 85%, 8%) |
| OKLCH | oklch(19.9% 0.038 237.9) |
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 #031825 | 18.08:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #031825 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #031825 text on white | 18.08:1 | AAA | Lc 104.7 | Preferred for body text |
| #031825 text on black | 1.16:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A6C6DB
oklch(81% 0.045 236.9)
-
Step 400
400
#75A8C9
oklch(70.8% 0.073 237.5)
-
Step 500
500
#4E91BB
oklch(63% 0.093 238.2)
-
Step 600
600
#2E7BA7
oklch(55.6% 0.101 237.8)
-
Step 700
700
#20688F
oklch(49.2% 0.093 237.2)
-
Step 800
800
#1D5574
oklch(42.8% 0.077 237)
-
Step 900
900
#1E465E
oklch(37.7% 0.061 237.7)
-
Step 950
950 (this color)
#031825
oklch(19.9% 0.038 237.9)
#031825 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) | #121826 | 0.022 |
| Deuteranopia (no green cones) | #0D1525 | 0.017 |
| Tritanopia (no blue cones) | #001B1C | 0.025 |
| Achromatopsia (no color) | #161616 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031825
#031825
oklch(19.9% 0.038 237.9)
- #231104
#231104
oklch(20% 0.039 56.9)
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 #031825, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Rich Navy #001219 ΔE 0.032
- Almost Black #070D0D ΔE 0.056
- Dark #1B2431 ΔE 0.061
- Jet #212529 ΔE 0.069
- Navy Blue #001146 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.072
- Dark Navy #000435 ΔE 0.075
Use #031825 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.