#255C4D
Closest named color: Dark Green Blue (#1F6357). oklch(43.3% 0.064 172.7), rgb(37, 92, 77).
Aa
White text reads best on this color (7.73:1).
About this color
#255C4D is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.064 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.023 away. White text reads best on it, at 7.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #255C4D |
| RGB | rgb(37, 92, 77) |
| HSL | hsl(164, 43%, 25%) |
| OKLCH | oklch(43.3% 0.064 172.7) |
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 #255C4D | 7.73:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #255C4D | 2.71:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #255C4D text on white | 7.73:1 | AAA | Lc 86.7 | Fine for body text |
| #255C4D text on black | 2.71:1 | Fails | Lc -15.4 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A9C9BE
oklch(80.9% 0.038 172.5)
-
Step 400
400
#7AAD9D
oklch(70.7% 0.059 173.1)
-
Step 500
500
#559985
oklch(63.2% 0.076 172.7)
-
Step 600
600
#37836E
oklch(55.6% 0.083 172.3)
-
Step 700
700
#286F5C
oklch(49.2% 0.077 172.3)
-
Step 800
800 (this color)
#255C4D
oklch(43.3% 0.064 172.7)
-
Step 900
900
#224A3F
oklch(37.6% 0.05 173.4)
-
Step 950
950
#152B25
oklch(26.9% 0.03 174.4)
#255C4D 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) | #59564C | 0.066 |
| Deuteranopia (no green cones) | #51504E | 0.064 |
| Tritanopia (no blue cones) | #065D58 | 0.021 |
| Achromatopsia (no color) | #535353 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255C4D
#255C4D
oklch(43.3% 0.064 172.7)
- #6C4254
#6C4254
oklch(43.4% 0.063 352.8)
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 #255C4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.023
- Pine #2B5D34 ΔE 0.039
- Deep Teal #00555A ΔE 0.042
- Dark Blue Green #005249 ΔE 0.042
- Spruce #0A5F38 ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.044
- Petrol #005F6A ΔE 0.046
- Dark Aqua #05696B ΔE 0.052
Use #255C4D 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.