#031E2D
Closest named color: Rich Black (#0D1B2A). oklch(22.3% 0.044 236.6), rgb(3, 30, 45).
Aa
White text reads best on this color (17.10:1).
About this color
#031E2D is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.044 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 17.10:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.10:1 |
Values
| HEX | #031E2D |
| RGB | rgb(3, 30, 45) |
| HSL | hsl(201, 88%, 9%) |
| OKLCH | oklch(22.3% 0.044 236.6) |
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 #031E2D | 17.10:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #031E2D | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #031E2D text on white | 17.10:1 | AAA | Lc 103.8 | Preferred for body text |
| #031E2D text on black | 1.22:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEA
oklch(88.6% 0.029 234.9)
-
Step 300
300
#A1C6DE
oklch(80.8% 0.052 236.7)
-
Step 400
400
#6CA9CE
oklch(70.7% 0.083 236.3)
-
Step 500
500
#4093C1
oklch(63.2% 0.106 236.2)
-
Step 600
600
#137CAE
oklch(55.6% 0.116 236.8)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#095579
oklch(42.6% 0.089 236.8)
-
Step 900
900
#154762
oklch(37.8% 0.069 236.7)
-
Step 950
950 (this color)
#031E2D
oklch(22.3% 0.044 236.6)
#031E2D 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) | #171E2E | 0.026 |
| Deuteranopia (no green cones) | #111A2D | 0.021 |
| Tritanopia (no blue cones) | #002223 | 0.029 |
| Achromatopsia (no color) | #1C1C1C | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031E2D
#031E2D
oklch(22.3% 0.044 236.6)
- #2A1505
#2A1505
oklch(22.2% 0.044 56.6)
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 #031E2D, 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
- Oxford Blue #1B263B ΔE 0.050
- Jet #212529 ΔE 0.052
- Rich Navy #001219 ΔE 0.056
- Navy Blue #001146 ΔE 0.067
- Almost Black #070D0D ΔE 0.080
- Dark Navy #000435 ΔE 0.087
Use #031E2D 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.