#031D16
Closest named color: Rich Black (#0D1B2A). oklch(20.8% 0.036 172.5), rgb(3, 29, 22).
Aa
White text reads best on this color (17.62:1).
About this color
#031D16 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.036 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.046 away. White text reads best on it, at 17.62:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.62:1 |
Values
| HEX | #031D16 |
| RGB | rgb(3, 29, 22) |
| HSL | hsl(164, 81%, 6%) |
| OKLCH | oklch(20.8% 0.036 172.5) |
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 #031D16 | 17.62:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #031D16 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #031D16 text on white | 17.62:1 | AAA | Lc 104.3 | Preferred for body text |
| #031D16 text on black | 1.19:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CADED7
oklch(88.4% 0.023 172.8)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#73AF9C
oklch(70.7% 0.069 172.3)
-
Step 500
500
#4B9B84
oklch(63.2% 0.087 172.3)
-
Step 600
600
#27856D
oklch(55.6% 0.094 172.1)
-
Step 700
700
#17715B
oklch(49.2% 0.088 171.8)
-
Step 800
800
#185C4B
oklch(42.8% 0.073 172.5)
-
Step 900
900
#1C4B3E
oklch(37.6% 0.056 172.2)
-
Step 950
950 (this color)
#031D16
oklch(20.8% 0.036 172.5)
#031D16 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) | #1C1A16 | 0.038 |
| Deuteranopia (no green cones) | #181816 | 0.034 |
| Tritanopia (no blue cones) | #001D1B | 0.010 |
| Achromatopsia (no color) | #191919 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031D16
#031D16
oklch(20.8% 0.036 172.5)
- #241119
#241119
oklch(20.8% 0.034 353.7)
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 #031D16, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.046
- Rich Navy #001219 ΔE 0.048
- Almost Black #070D0D ΔE 0.062
- Jet #212529 ΔE 0.064
- Dark #1B2431 ΔE 0.066
- Dark Forest Green #002D04 ΔE 0.074
- Very Dark Green #062E03 ΔE 0.078
- Oxford Blue #1B263B ΔE 0.083
Use #031D16 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.