#25878F
Closest named color: Dark Cyan (#008B8B). oklch(57.3% 0.087 203.1), rgb(37, 135, 143).
Aa
Black text reads best on this color (4.94:1).
About this color
#25878F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.087 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.018 away. Black text reads best on it, at 4.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.94:1 |
| White text | 4.25:1 |
Values
| HEX | #25878F |
| RGB | rgb(37, 135, 143) |
| HSL | hsl(185, 59%, 35%) |
| OKLCH | oklch(57.3% 0.087 203.1) |
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 #25878F | 4.25:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #25878F | 4.94:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #25878F text on white | 4.25:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #25878F text on black | 4.94:1 | AA | Lc -32.6 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A4C9CC
oklch(81% 0.04 202.5)
-
Step 400
400
#70ADB2
oklch(70.8% 0.063 202.4)
-
Step 500
500
#45989F
oklch(63.1% 0.081 202.8)
-
Step 600
600 (this color)
#25878F
oklch(57.3% 0.087 203.1)
-
Step 700
700
#0B6E75
oklch(49.1% 0.081 202.8)
-
Step 800
800
#115A5F
oklch(42.8% 0.067 202)
-
Step 900
900
#184A4E
oklch(37.8% 0.053 202.6)
-
Step 950
950
#102B2E
oklch(27% 0.033 205.1)
#25878F 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) | #7C8190 | 0.087 |
| Deuteranopia (no green cones) | #6D768F | 0.080 |
| Tritanopia (no blue cones) | #008D89 | 0.025 |
| Achromatopsia (no color) | #7B7B7B | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25878F
#25878F
oklch(57.3% 0.087 203.1)
- #A66360
#A66360
oklch(57.4% 0.087 22.9)
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 #25878F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.018
- Teal Blue #01889F ΔE 0.025
- Teal #008080 ΔE 0.033
- Teal Green #0A9396 ΔE 0.034
- Ocean #017B92 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.046
- Bluegreen #017A79 ΔE 0.050
- Deep Aqua #08787F ΔE 0.050
Use #25878F 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.