#255253
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.7% 0.049 197.3), rgb(37, 82, 83).
Aa
White text reads best on this color (8.71:1).
About this color
#255253 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.049 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.013 away. White text reads best on it, at 8.71:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.41:1 |
| White text | 8.71:1 |
Values
| HEX | #255253 |
| RGB | rgb(37, 82, 83) |
| HSL | hsl(181, 38%, 24%) |
| OKLCH | oklch(40.7% 0.049 197.3) |
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 #255253 | 8.71:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #255253 | 2.41:1 | Fails | Lc 14.3 | Not readable |
| #255253 text on white | 8.71:1 | AAA | Lc 89.7 | Fine for body text |
| #255253 text on black | 2.41:1 | Fails | Lc -12.5 | 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
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDDDD
oklch(88.6% 0.016 196.9)
-
Step 300
300
#ACC7C7
oklch(81% 0.029 196.6)
-
Step 400
400
#7FAAAB
oklch(70.7% 0.046 197.9)
-
Step 500
500
#5D9596
oklch(63.2% 0.059 197.2)
-
Step 600
600
#417F80
oklch(55.6% 0.064 196.8)
-
Step 700
700
#326B6C
oklch(49% 0.06 196.9)
-
Step 800
800 (this color)
#255253
oklch(40.7% 0.049 197.3)
-
Step 900
900
#274849
oklch(37.7% 0.039 198.1)
-
Step 950
950
#182A2B
oklch(27% 0.024 200.3)
#255253 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) | #4D4E53 | 0.052 |
| Deuteranopia (no green cones) | #454953 | 0.047 |
| Tritanopia (no blue cones) | #045552 | 0.020 |
| Achromatopsia (no color) | #4B4B4B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255253
#255253
oklch(40.7% 0.049 197.3)
- #623F40
#623F40
oklch(40.8% 0.049 17.6)
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 #255253, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.013
- Deep Teal #00555A ΔE 0.021
- Dark Blue Green #005249 ΔE 0.029
- Dark Teal #014D4E ΔE 0.030
- Charcoal #264653 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.046
- Petrol #005F6A ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.054
Use #255253 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.