#255A50
Closest named color: Dark Green Blue (#1F6357). oklch(42.9% 0.059 179.1), rgb(37, 90, 80).
Aa
White text reads best on this color (7.90:1).
About this color
#255A50 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.059 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.028 away. White text reads best on it, at 7.90:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #255A50 |
| RGB | rgb(37, 90, 80) |
| HSL | hsl(169, 42%, 25%) |
| OKLCH | oklch(42.9% 0.059 179.1) |
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 #255A50 | 7.90:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #255A50 | 2.65:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #255A50 text on white | 7.90:1 | AAA | Lc 87.2 | Fine for body text |
| #255A50 text on black | 2.65:1 | Fails | Lc -14.9 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CCDDD9
oklch(88.4% 0.019 180.2)
-
Step 300
300
#AAC8C1
oklch(80.9% 0.034 179.7)
-
Step 400
400
#7BACA1
oklch(70.6% 0.055 179.2)
-
Step 500
500
#56988A
oklch(63.1% 0.071 178.6)
-
Step 600
600
#398274
oklch(55.6% 0.076 178.9)
-
Step 700
700
#2A6E61
oklch(49.1% 0.072 178.5)
-
Step 800
800 (this color)
#255A50
oklch(42.9% 0.059 179.1)
-
Step 900
900
#234A42
oklch(37.8% 0.047 178.6)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#255A50 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) | #565550 | 0.062 |
| Deuteranopia (no green cones) | #4E4F51 | 0.059 |
| Tritanopia (no blue cones) | #035B57 | 0.018 |
| Achromatopsia (no color) | #515151 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255A50
#255A50
oklch(42.9% 0.059 179.1)
- #6A414E
#6A414E
oklch(42.7% 0.06 359.4)
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 #255A50, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.028
- Deep Teal #00555A ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.036
- Dark Blue Green #005249 ΔE 0.037
- Petrol #005F6A ΔE 0.041
- Pine #2B5D34 ΔE 0.047
- Spruce #0A5F38 ΔE 0.050
- Dark Teal #014D4E ΔE 0.051
Use #255A50 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.