#255B70
Closest named color: Petrol (#005F6A). oklch(44.4% 0.066 226.8), rgb(37, 91, 112).
Aa
White text reads best on this color (7.47:1).
About this color
#255B70 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.066 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.025 away. White text reads best on it, at 7.47:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.80:1 |
| White text | 7.47:1 |
Values
| HEX | #255B70 |
| RGB | rgb(37, 91, 112) |
| HSL | hsl(197, 50%, 29%) |
| OKLCH | oklch(44.4% 0.066 226.8) |
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 #255B70 | 7.47:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #255B70 | 2.80:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #255B70 text on white | 7.47:1 | AAA | Lc 85.8 | Fine for body text |
| #255B70 text on black | 2.80:1 | Fails | Lc -16.3 | 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
#E3ECF0
oklch(93.7% 0.011 226)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D4
oklch(80.8% 0.039 226.9)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5193AE
oklch(63% 0.079 226.7)
-
Step 600
600
#327D9A
oklch(55.6% 0.086 227)
-
Step 700
700
#236A84
oklch(49.2% 0.08 226.5)
-
Step 800
800 (this color)
#255B70
oklch(44.4% 0.066 226.8)
-
Step 900
900
#204757
oklch(37.7% 0.052 227.4)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#255B70 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) | #505971 | 0.050 |
| Deuteranopia (no green cones) | #455170 | 0.044 |
| Tritanopia (no blue cones) | #006162 | 0.039 |
| Achromatopsia (no color) | #555555 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255B70
#255B70
oklch(44.4% 0.066 226.8)
- #724833
#724833
oklch(44.5% 0.066 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 #255B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.025
- YInMn Blue #415A77 ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.046
- Deep Teal #00555A ΔE 0.046
- Dark Aqua #05696B ΔE 0.049
- Denim #3B638C ΔE 0.055
- Light Navy #155084 ΔE 0.055
Use #255B70 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.