#031D20
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.033 205.5), rgb(3, 29, 32).
Aa
White text reads best on this color (17.49:1).
About this color
#031D20 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.033 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.027 away. White text reads best on it, at 17.49:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.49:1 |
Values
| HEX | #031D20 |
| RGB | rgb(3, 29, 32) |
| HSL | hsl(186, 83%, 7%) |
| OKLCH | oklch(21.2% 0.033 205.5) |
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 #031D20 | 17.49:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #031D20 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #031D20 text on white | 17.49:1 | AAA | Lc 104.2 | Preferred for body text |
| #031D20 text on black | 1.20:1 | 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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CD
oklch(80.9% 0.038 207)
-
Step 400
400
#71ACB3
oklch(70.7% 0.062 205.3)
-
Step 500
500
#4797A0
oklch(63% 0.079 205.2)
-
Step 600
600
#22818B
oklch(55.5% 0.085 205.5)
-
Step 700
700
#116D76
oklch(49% 0.079 205.4)
-
Step 800
800
#145960
oklch(42.6% 0.066 205.2)
-
Step 900
900
#1A494F
oklch(37.6% 0.051 206.8)
-
Step 950
950 (this color)
#031D20
oklch(21.2% 0.033 205.5)
#031D20 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) | #1A1B20 | 0.033 |
| Deuteranopia (no green cones) | #151820 | 0.029 |
| Tritanopia (no blue cones) | #001F1E | 0.010 |
| Achromatopsia (no color) | #1A1A1A | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031D20
#031D20
oklch(21.2% 0.033 205.5)
- #261311
#261311
oklch(21.3% 0.032 26.5)
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 #031D20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.027
- Rich Navy #001219 ΔE 0.044
- Dark #1B2431 ΔE 0.053
- Jet #212529 ΔE 0.056
- Almost Black #070D0D ΔE 0.064
- Oxford Blue #1B263B ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.086
- Navy Blue #001146 ΔE 0.089
Use #031D20 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.