#255A65
Closest named color: Petrol (#005F6A). oklch(43.7% 0.058 213.4), rgb(37, 90, 101).
Aa
White text reads best on this color (7.69:1).
About this color
#255A65 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.058 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.020 away. White text reads best on it, at 7.69:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #255A65 |
| RGB | rgb(37, 90, 101) |
| HSL | hsl(190, 46%, 27%) |
| OKLCH | oklch(43.7% 0.058 213.4) |
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 #255A65 | 7.69:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #255A65 | 2.72:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #255A65 text on white | 7.69:1 | AAA | Lc 86.5 | Fine for body text |
| #255A65 text on black | 2.72:1 | Fails | Lc -15.5 | 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
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDDE1
oklch(88.6% 0.019 213.4)
-
Step 300
300
#A8C7CE
oklch(80.9% 0.035 212.9)
-
Step 400
400
#79AAB5
oklch(70.7% 0.054 213.1)
-
Step 500
500
#5495A3
oklch(63.2% 0.07 213.2)
-
Step 600
600
#357F8E
oklch(55.6% 0.076 213.1)
-
Step 700
700
#276B79
oklch(49.1% 0.07 213.8)
-
Step 800
800 (this color)
#255A65
oklch(43.7% 0.058 213.4)
-
Step 900
900
#224850
oklch(37.7% 0.045 213.1)
-
Step 950
950
#152A2F
oklch(27% 0.028 214.7)
#255A65 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) | #525766 | 0.054 |
| Deuteranopia (no green cones) | #485065 | 0.048 |
| Tritanopia (no blue cones) | #005E5D | 0.028 |
| Achromatopsia (no color) | #535353 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255A65
#255A65
oklch(43.7% 0.058 213.4)
- #6E463C
#6E463C
oklch(43.7% 0.058 34.7)
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 #255A65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.020
- Deep Teal #00555A ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.045
- Dark Aqua #05696B ΔE 0.046
- Dark Blue Green #005249 ΔE 0.056
- Dark Teal #014D4E ΔE 0.059
Use #255A65 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.