#285251
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.8% 0.047 193.4), rgb(40, 82, 81).
Aa
White text reads best on this color (8.69:1).
About this color
#285251 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.047 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.011 away. White text reads best on it, at 8.69:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #285251 |
| RGB | rgb(40, 82, 81) |
| HSL | hsl(179, 34%, 24%) |
| OKLCH | oklch(40.8% 0.047 193.4) |
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 #285251 | 8.69:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #285251 | 2.41:1 | Fails | Lc 14.3 | Not readable |
| #285251 text on white | 8.69:1 | AAA | Lc 89.7 | Fine for body text |
| #285251 text on black | 2.41:1 | Fails | Lc -12.6 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDCDC
oklch(88.4% 0.015 196.9)
-
Step 300
300
#ADC7C5
oklch(81% 0.028 190.9)
-
Step 400
400
#81AAA8
oklch(70.8% 0.044 192.5)
-
Step 500
500
#609593
oklch(63.2% 0.056 192.8)
-
Step 600
600
#457F7D
oklch(55.7% 0.061 192.6)
-
Step 700
700
#366B6A
oklch(49.1% 0.057 193.9)
-
Step 800
800 (this color)
#285251
oklch(40.8% 0.047 193.4)
-
Step 900
900
#294847
oklch(37.7% 0.037 193.1)
-
Step 950
950
#192A2A
oklch(27% 0.023 195.9)
#285251 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) | #4D4E51 | 0.049 |
| Deuteranopia (no green cones) | #464951 | 0.046 |
| Tritanopia (no blue cones) | #115452 | 0.017 |
| Achromatopsia (no color) | #4B4B4B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285251
#285251
oklch(40.8% 0.047 193.4)
- #613F42
#613F42
oklch(40.8% 0.048 13.6)
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 #285251, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.011
- Deep Teal #00555A ΔE 0.024
- Dark Blue Green #005249 ΔE 0.030
- Dark Teal #014D4E ΔE 0.032
- Charcoal #264653 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.048
- Petrol #005F6A ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.053
Use #285251 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.