#255668
Closest named color: Petrol (#005F6A). oklch(42.7% 0.06 225), rgb(37, 86, 104).
Aa
White text reads best on this color (8.04:1).
About this color
#255668 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.060 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.030 away. White text reads best on it, at 8.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #255668 |
| RGB | rgb(37, 86, 104) |
| HSL | hsl(196, 48%, 28%) |
| OKLCH | oklch(42.7% 0.06 225) |
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 #255668 | 8.04:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #255668 | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #255668 text on white | 8.04:1 | AAA | Lc 87.7 | Fine for body text |
| #255668 text on black | 2.60:1 | Fails | Lc -14.4 | Not readable |
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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D2
oklch(80.9% 0.036 224.7)
-
Step 400
400
#7AA9BB
oklch(70.8% 0.057 223.7)
-
Step 500
500
#5693AA
oklch(63.1% 0.072 224.4)
-
Step 600
600
#397D96
oklch(55.6% 0.078 225.1)
-
Step 700
700
#2B6980
oklch(49.1% 0.073 225.7)
-
Step 800
800 (this color)
#255668
oklch(42.7% 0.06 225)
-
Step 900
900
#234754
oklch(37.7% 0.047 223.8)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#255668 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) | #4C5469 | 0.047 |
| Deuteranopia (no green cones) | #434D68 | 0.042 |
| Tritanopia (no blue cones) | #005B5C | 0.035 |
| Achromatopsia (no color) | #505050 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255668
#255668
oklch(42.7% 0.06 225)
- #6B4433
#6B4433
oklch(42.7% 0.061 44.3)
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 #255668, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.030
- Deep Teal #00555A ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.041
- YInMn Blue #415A77 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.054
- Charcoal #264653 ΔE 0.055
Use #255668 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.