#25565D
Closest named color: Deep Teal (#00555A). oklch(42.3% 0.054 207.8), rgb(37, 86, 93).
Aa
White text reads best on this color (8.17:1).
About this color
#25565D is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.054 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.022 away. White text reads best on it, at 8.17:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #25565D |
| RGB | rgb(37, 86, 93) |
| HSL | hsl(188, 43%, 25%) |
| OKLCH | oklch(42.3% 0.054 207.8) |
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 #25565D | 8.17:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #25565D | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #25565D text on white | 8.17:1 | AAA | Lc 88.1 | Fine for body text |
| #25565D text on black | 2.56:1 | Fails | Lc -14.0 | 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
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CB
oklch(80.9% 0.032 206.7)
-
Step 400
400
#7CAAB1
oklch(70.8% 0.05 207.8)
-
Step 500
500
#58959E
oklch(63.2% 0.065 207.7)
-
Step 600
600
#3B7F89
oklch(55.7% 0.07 208.2)
-
Step 700
700
#2D6B74
oklch(49.1% 0.065 208.2)
-
Step 800
800 (this color)
#25565D
oklch(42.3% 0.054 207.8)
-
Step 900
900
#24484D
oklch(37.7% 0.042 207.2)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#25565D 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) | #4F535D | 0.052 |
| Deuteranopia (no green cones) | #464C5D | 0.048 |
| Tritanopia (no blue cones) | #005A58 | 0.025 |
| Achromatopsia (no color) | #4F4F4F | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25565D
#25565D
oklch(42.3% 0.054 207.8)
- #68423D
#68423D
oklch(42.2% 0.054 27.8)
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 #25565D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.027
- Petrol #005F6A ΔE 0.031
- Dark Blue Green #005249 ΔE 0.043
- Dark Teal #014D4E ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.047
- Charcoal #264653 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.051
Use #25565D 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.