#255F76
Closest named color: Petrol (#005F6A). oklch(45.8% 0.07 227.6), rgb(37, 95, 118).
Aa
White text reads best on this color (7.05:1).
About this color
#255F76 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.070 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.029 away. White text reads best on it, at 7.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #255F76 |
| RGB | rgb(37, 95, 118) |
| HSL | hsl(197, 52%, 30%) |
| OKLCH | oklch(45.8% 0.07 227.6) |
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 #255F76 | 7.05:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #255F76 | 2.97:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #255F76 text on white | 7.05:1 | AAA | Lc 84.2 | Fine for body text |
| #255F76 text on black | 2.97:1 | Fails | Lc -17.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A6C6D6
oklch(80.8% 0.041 229.5)
-
Step 400
400
#74A9C1
oklch(70.6% 0.066 228)
-
Step 500
500
#4D94B1
oklch(63.2% 0.083 227)
-
Step 600
600
#2B7D9D
oklch(55.5% 0.091 228.1)
-
Step 700
700
#1C6A86
oklch(49.2% 0.085 227)
-
Step 800
800 (this color)
#255F76
oklch(45.8% 0.07 227.6)
-
Step 900
900
#1D4758
oklch(37.6% 0.055 227.5)
-
Step 950
950
#122A34
oklch(27.1% 0.035 227.4)
#255F76 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) | #535D77 | 0.052 |
| Deuteranopia (no green cones) | #485576 | 0.046 |
| Tritanopia (no blue cones) | #006667 | 0.042 |
| Achromatopsia (no color) | #595959 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255F76
#255F76
oklch(45.8% 0.07 227.6)
- #774B34
#774B34
oklch(45.7% 0.07 48)
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 #255F76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.029
- YInMn Blue #415A77 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.038
- Dark Aqua #05696B ΔE 0.043
- Denim #3B638C ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.049
- Peacock Blue #016795 ΔE 0.050
- Slate #516572 ΔE 0.054
Use #255F76 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.