#25555D
Closest named color: Deep Teal (#00555A). oklch(42% 0.053 209.8), rgb(37, 85, 93).
Aa
White text reads best on this color (8.28:1).
About this color
#25555D is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.053 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.021 away. White text reads best on it, at 8.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #25555D |
| RGB | rgb(37, 85, 93) |
| HSL | hsl(189, 43%, 25%) |
| OKLCH | oklch(42% 0.053 209.8) |
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 #25555D | 8.28:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #25555D | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #25555D text on white | 8.28:1 | AAA | Lc 88.4 | Fine for body text |
| #25555D text on black | 2.53:1 | Fails | Lc -13.7 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDCDF
oklch(88.4% 0.017 211)
-
Step 300
300
#AAC7CC
oklch(81% 0.032 209.2)
-
Step 400
400
#7CAAB2
oklch(70.8% 0.05 209.4)
-
Step 500
500
#59949F
oklch(63% 0.064 210.7)
-
Step 600
600
#3C7E8A
oklch(55.5% 0.069 211)
-
Step 700
700
#2E6B75
oklch(49.2% 0.064 209.7)
-
Step 800
800 (this color)
#25555D
oklch(42% 0.053 209.8)
-
Step 900
900
#25484E
oklch(37.8% 0.042 209.8)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#25555D 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) | #4E525E | 0.051 |
| Deuteranopia (no green cones) | #454C5D | 0.045 |
| Tritanopia (no blue cones) | #005957 | 0.027 |
| Achromatopsia (no color) | #4E4E4E | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25555D
#25555D
oklch(42% 0.053 209.8)
- #67423C
#67423C
oklch(42% 0.053 29.6)
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 #25555D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.021
- Dark Slate Gray #2F4F4F ΔE 0.025
- Petrol #005F6A ΔE 0.034
- Dark Teal #014D4E ΔE 0.043
- Dark Blue Green #005249 ΔE 0.043
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.050
Use #25555D 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.