#10312C
Closest named color: Jet (#212529). oklch(28.7% 0.04 182), rgb(16, 49, 44).
Aa
White text reads best on this color (14.02:1).
About this color
#10312C is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.040 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.044 away. White text reads best on it, at 14.02:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.49:1 |
| White text | 14.02:1 |
Values
| HEX | #10312C |
| RGB | rgb(16, 49, 44) |
| HSL | hsl(171, 51%, 13%) |
| OKLCH | oklch(28.7% 0.04 182) |
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 #10312C | 14.02:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #10312C | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #10312C text on white | 14.02:1 | AAA | Lc 100.5 | Preferred for body text |
| #10312C text on black | 1.49:1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C7DFDA
oklch(88.4% 0.026 181.8)
-
Step 300
300
#A0CBC3
oklch(80.9% 0.047 182.5)
-
Step 400
400
#68B0A4
oklch(70.6% 0.075 182.2)
-
Step 500
500
#359C8E
oklch(63% 0.096 182.4)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#0C4C44
oklch(37.6% 0.062 182.3)
-
Step 950
950 (this color)
#10312C
oklch(28.7% 0.04 182)
#10312C 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) | #2F2E2C | 0.043 |
| Deuteranopia (no green cones) | #292A2C | 0.039 |
| Tritanopia (no blue cones) | #00322F | 0.011 |
| Achromatopsia (no color) | #2C2C2C | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10312C
#10312C
oklch(28.7% 0.04 182)
- #3B2229
#3B2229
oklch(28.7% 0.04 1.7)
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 #10312C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.044
- Pakistan Green #283618 ΔE 0.049
- Dark #1B2431 ΔE 0.051
- Gunmetal #293241 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.056
- Midnight Green #073B4C ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.061
- Very Dark Green #062E03 ΔE 0.063
Use #10312C 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.