#255F75
Closest named color: Petrol (#005F6A). oklch(45.7% 0.069 226.4), rgb(37, 95, 117).
Aa
White text reads best on this color (7.06:1).
About this color
#255F75 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.069 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.027 away. White text reads best on it, at 7.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #255F75 |
| RGB | rgb(37, 95, 117) |
| HSL | hsl(196, 52%, 30%) |
| OKLCH | oklch(45.7% 0.069 226.4) |
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 #255F75 | 7.06:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #255F75 | 2.97:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #255F75 text on white | 7.06:1 | AAA | Lc 84.3 | Fine for body text |
| #255F75 text on black | 2.97:1 | Fails | Lc -17.7 | 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
#A6C7D5
oklch(81% 0.041 225.4)
-
Step 400
400
#74A9C0
oklch(70.6% 0.065 227)
-
Step 500
500
#4D94B0
oklch(63.2% 0.083 226.1)
-
Step 600
600
#2B7E9C
oklch(55.7% 0.09 226.2)
-
Step 700
700
#1D6A85
oklch(49.1% 0.083 226.3)
-
Step 800
800 (this color)
#255F75
oklch(45.7% 0.069 226.4)
-
Step 900
900
#1D4758
oklch(37.6% 0.055 227.5)
-
Step 950
950
#122A33
oklch(27% 0.034 224.8)
#255F75 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) | #535D76 | 0.052 |
| Deuteranopia (no green cones) | #485575 | 0.046 |
| Tritanopia (no blue cones) | #006566 | 0.040 |
| Achromatopsia (no color) | #585858 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255F75
#255F75
oklch(45.7% 0.069 226.4)
- #774B35
#774B35
oklch(45.8% 0.069 47.1)
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 #255F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.027
- YInMn Blue #415A77 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.040
- Dark Aqua #05696B ΔE 0.042
- Denim #3B638C ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.050
- Peacock Blue #016795 ΔE 0.052
- Slate #516572 ΔE 0.054
Use #255F75 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.