#25564B
Closest named color: Dark Blue Green (#005249). oklch(41.6% 0.057 176.6), rgb(37, 86, 75).
Aa
White text reads best on this color (8.36:1).
About this color
#25564B is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.057 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.027 away. White text reads best on it, at 8.36:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.51:1 |
| White text | 8.36:1 |
Values
| HEX | #25564B |
| RGB | rgb(37, 86, 75) |
| HSL | hsl(167, 40%, 24%) |
| OKLCH | oklch(41.6% 0.057 176.6) |
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 #25564B | 8.36:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #25564B | 2.51:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #25564B text on white | 8.36:1 | AAA | Lc 88.7 | Fine for body text |
| #25564B text on black | 2.51:1 | Fails | Lc -13.5 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#ABC8C0
oklch(80.9% 0.033 177)
-
Step 400
400
#7DACA0
oklch(70.7% 0.053 177.1)
-
Step 500
500
#5A9788
oklch(63% 0.068 176.5)
-
Step 600
600
#3E8172
oklch(55.5% 0.073 176.9)
-
Step 700
700
#2F6D60
oklch(49% 0.068 177.6)
-
Step 800
800 (this color)
#25564B
oklch(41.6% 0.057 176.6)
-
Step 900
900
#264941
oklch(37.6% 0.043 177.4)
-
Step 950
950
#172B26
oklch(27% 0.028 176.4)
#25564B 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) | #53514B | 0.060 |
| Deuteranopia (no green cones) | #4B4B4C | 0.057 |
| Tritanopia (no blue cones) | #0B5753 | 0.018 |
| Achromatopsia (no color) | #4E4E4E | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25564B
#25564B
oklch(41.6% 0.057 176.6)
- #653F4C
#653F4C
oklch(41.6% 0.056 357.7)
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 #25564B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.027
- Deep Teal #00555A ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.041
- Dark Teal #014D4E ΔE 0.041
- Pine #2B5D34 ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Spruce #0A5F38 ΔE 0.052
Use #25564B 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.