#255E76
Closest named color: Petrol (#005F6A). oklch(45.5% 0.071 229), rgb(37, 94, 118).
Aa
White text reads best on this color (7.13:1).
About this color
#255E76 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 229°. 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 7.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #255E76 |
| RGB | rgb(37, 94, 118) |
| HSL | hsl(198, 52%, 30%) |
| OKLCH | oklch(45.5% 0.071 229) |
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 #255E76 | 7.13:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #255E76 | 2.94:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #255E76 text on white | 7.13:1 | AAA | Lc 84.5 | Fine for body text |
| #255E76 text on black | 2.94:1 | Fails | Lc -17.4 | 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
#CADCE5
oklch(88.4% 0.023 229.1)
-
Step 300
300
#A6C6D6
oklch(80.8% 0.041 229.5)
-
Step 400
400
#75A9C2
oklch(70.7% 0.066 229.5)
-
Step 500
500
#4D93B2
oklch(63% 0.084 229)
-
Step 600
600
#2D7D9E
oklch(55.6% 0.091 229.3)
-
Step 700
700
#1E6987
oklch(49% 0.085 229.4)
-
Step 800
800 (this color)
#255E76
oklch(45.5% 0.071 229)
-
Step 900
900
#1E4759
oklch(37.7% 0.055 229.4)
-
Step 950
950
#132A34
oklch(27.1% 0.034 228.3)
#255E76 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) | #525C77 | 0.051 |
| Deuteranopia (no green cones) | #465476 | 0.044 |
| Tritanopia (no blue cones) | #006566 | 0.043 |
| Achromatopsia (no color) | #585858 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255E76
#255E76
oklch(45.5% 0.071 229)
- #764A32
#764A32
oklch(45.4% 0.07 48.9)
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 #255E76, 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 0.030
- Light Navy Blue #2E5A88 ΔE 0.037
- Denim #3B638C ΔE 0.045
- Dark Aqua #05696B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.046
- Peacock Blue #016795 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.055
Use #255E76 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.