#031B20
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.032 213.2), rgb(3, 27, 32).
Aa
White text reads best on this color (17.77:1).
About this color
#031B20 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.032 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.025 away. White text reads best on it, at 17.77:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.77:1 |
Values
| HEX | #031B20 |
| RGB | rgb(3, 27, 32) |
| HSL | hsl(190, 83%, 7%) |
| OKLCH | oklch(20.6% 0.032 213.2) |
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 #031B20 | 17.77:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #031B20 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #031B20 text on white | 17.77:1 | AAA | Lc 104.4 | Preferred for body text |
| #031B20 text on black | 1.18:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A6C8CF
oklch(81% 0.038 211.5)
-
Step 400
400
#74ABB7
oklch(70.7% 0.06 212.8)
-
Step 500
500
#4B96A6
oklch(63.1% 0.078 213.4)
-
Step 600
600
#298091
oklch(55.6% 0.084 213.4)
-
Step 700
700
#196C7B
oklch(49.1% 0.078 212.9)
-
Step 800
800
#195864
oklch(42.7% 0.065 213)
-
Step 900
900
#1C4952
oklch(37.8% 0.051 212.8)
-
Step 950
950 (this color)
#031B20
oklch(20.6% 0.032 213.2)
#031B20 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) | #171A20 | 0.028 |
| Deuteranopia (no green cones) | #131720 | 0.025 |
| Tritanopia (no blue cones) | #001D1D | 0.012 |
| Achromatopsia (no color) | #181818 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031B20
#031B20
oklch(20.6% 0.032 213.2)
- #24120E
#24120E
oklch(20.7% 0.031 33.3)
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 #031B20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Rich Navy #001219 ΔE 0.037
- Dark #1B2431 ΔE 0.057
- Almost Black #070D0D ΔE 0.058
- Jet #212529 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.071
- Navy Blue #001146 ΔE 0.085
- Dark Navy #000435 ΔE 0.092
Use #031B20 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.