#25544B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41% 0.054 179.3), rgb(37, 84, 75).
Aa
White text reads best on this color (8.57:1).
About this color
#25544B is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.054 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.022 away. White text reads best on it, at 8.57:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #25544B |
| RGB | rgb(37, 84, 75) |
| HSL | hsl(169, 39%, 24%) |
| OKLCH | oklch(41% 0.054 179.3) |
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 #25544B | 8.57:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #25544B | 2.44:1 | Fails | Lc 14.7 | Not readable |
| #25544B text on white | 8.57:1 | AAA | Lc 89.3 | Fine for body text |
| #25544B text on black | 2.44:1 | Fails | Lc -12.9 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ACC8C1
oklch(81% 0.032 178.7)
-
Step 400
400
#7FABA1
oklch(70.6% 0.05 179.2)
-
Step 500
500
#5C978A
oklch(63.2% 0.065 178.5)
-
Step 600
600
#408174
oklch(55.6% 0.07 178.9)
-
Step 700
700
#316D61
oklch(49.1% 0.066 178.5)
-
Step 800
800 (this color)
#25544B
oklch(41% 0.054 179.3)
-
Step 900
900
#274942
oklch(37.7% 0.042 179.2)
-
Step 950
950
#172B27
oklch(27.1% 0.027 180)
#25544B 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) | #514F4B | 0.058 |
| Deuteranopia (no green cones) | #494A4C | 0.054 |
| Tritanopia (no blue cones) | #0C5551 | 0.016 |
| Achromatopsia (no color) | #4C4C4C | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25544B
#25544B
oklch(41% 0.054 179.3)
- #633E49
#633E49
oklch(41.1% 0.054 0.4)
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 #25544B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.022
- Dark Blue Green #005249 ΔE 0.024
- Deep Teal #00555A ΔE 0.029
- Dark Teal #014D4E ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.047
- Petrol #005F6A ΔE 0.052
- Charcoal #264653 ΔE 0.053
- Pine #2B5D34 ΔE 0.054
Use #25544B 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.