#25878A
Closest named color: Dark Cyan (#008B8B). oklch(57.1% 0.087 198.1), rgb(37, 135, 138).
Aa
Black text reads best on this color (4.91:1).
About this color
#25878A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.087 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.014 away. Black text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #25878A |
| RGB | rgb(37, 135, 138) |
| HSL | hsl(182, 58%, 34%) |
| OKLCH | oklch(57.1% 0.087 198.1) |
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 #25878A | 4.27:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #25878A | 4.91:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #25878A text on white | 4.27:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #25878A text on black | 4.91:1 | AA | Lc -32.4 | 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
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDE
oklch(88.6% 0.021 196.8)
-
Step 300
300
#A4C9CA
oklch(80.9% 0.039 198.4)
-
Step 400
400
#71ADAF
oklch(70.7% 0.062 198.5)
-
Step 500
500
#46989B
oklch(63% 0.08 198.6)
-
Step 600
600 (this color)
#25878A
oklch(57.1% 0.087 198.1)
-
Step 700
700
#0C6E71
oklch(49% 0.081 198.3)
-
Step 800
800
#125A5C
oklch(42.7% 0.067 197.8)
-
Step 900
900
#194A4C
oklch(37.7% 0.052 199)
-
Step 950
950
#102B2C
oklch(26.9% 0.033 198.6)
#25878A 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) | #7D818A | 0.089 |
| Deuteranopia (no green cones) | #6E768B | 0.082 |
| Tritanopia (no blue cones) | #008C88 | 0.018 |
| Achromatopsia (no color) | #7A7A7A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25878A
#25878A
oklch(57.1% 0.087 198.1)
- #A56264
#A56264
oklch(57.1% 0.087 18.2)
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 #25878A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.014
- Teal #008080 ΔE 0.029
- Teal Blue #01889F ΔE 0.032
- Teal Green #0A9396 ΔE 0.035
- Dusty Teal #4C9085 ΔE 0.044
- Ocean #017B92 ΔE 0.045
- Bluegreen #017A79 ΔE 0.047
- Deep Aqua #08787F ΔE 0.049
Use #25878A 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.