#255E68
Closest named color: Petrol (#005F6A). oklch(44.9% 0.061 210.9), rgb(37, 94, 104).
Aa
White text reads best on this color (7.29:1).
About this color
#255E68 is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.061 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.016 away. White text reads best on it, at 7.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #255E68 |
| RGB | rgb(37, 94, 104) |
| HSL | hsl(189, 48%, 28%) |
| OKLCH | oklch(44.9% 0.061 210.9) |
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 #255E68 | 7.29:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #255E68 | 2.87:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #255E68 text on white | 7.29:1 | AAA | Lc 85.1 | Fine for body text |
| #255E68 text on black | 2.87:1 | Fails | Lc -16.9 | Dividers and decoration only |
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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C7CE
oklch(80.8% 0.036 212.4)
-
Step 400
400
#76ABB5
oklch(70.8% 0.058 210.6)
-
Step 500
500
#5096A2
oklch(63.2% 0.073 209.9)
-
Step 600
600
#30808D
oklch(55.7% 0.079 210)
-
Step 700
700
#216C78
oklch(49.2% 0.073 210.3)
-
Step 800
800 (this color)
#255E68
oklch(44.9% 0.061 210.9)
-
Step 900
900
#1F4850
oklch(37.6% 0.048 212.1)
-
Step 950
950
#132A2F
oklch(26.9% 0.03 213.4)
#255E68 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) | #565B69 | 0.058 |
| Deuteranopia (no green cones) | #4C5368 | 0.053 |
| Tritanopia (no blue cones) | #006261 | 0.026 |
| Achromatopsia (no color) | #565656 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255E68
#255E68
oklch(44.9% 0.061 210.9)
- #734840
#734840
oklch(44.9% 0.061 31.1)
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 #255E68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.016
- Dark Aqua #05696B ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.037
- Deep Teal #00555A ΔE 0.042
- YInMn Blue #415A77 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.053
- Slate #516572 ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.060
Use #255E68 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.