#25657B
Closest named color: Dark Aqua (#05696B). oklch(47.6% 0.073 224.4), rgb(37, 101, 123).
Aa
White text reads best on this color (6.50:1).
About this color
#25657B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.073 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.036 away. White text reads best on it, at 6.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #25657B |
| RGB | rgb(37, 101, 123) |
| HSL | hsl(195, 54%, 31%) |
| OKLCH | oklch(47.6% 0.073 224.4) |
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 #25657B | 6.50:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #25657B | 3.22:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #25657B text on white | 6.50:1 | AA | Lc 82.0 | Fine for body text |
| #25657B text on black | 3.22:1 | AA large text | Lc -19.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D2
oklch(80.9% 0.036 224.7)
-
Step 400
400
#7AA9BB
oklch(70.8% 0.057 223.7)
-
Step 500
500
#5693AA
oklch(63.1% 0.072 224.4)
-
Step 600
600
#387D96
oklch(55.6% 0.079 224.8)
-
Step 700
700 (this color)
#25657B
oklch(47.6% 0.073 224.4)
-
Step 800
800
#245668
oklch(42.7% 0.061 224.7)
-
Step 900
900
#234754
oklch(37.7% 0.047 223.8)
-
Step 950
950
#152A31
oklch(27.1% 0.03 221.5)
#25657B 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) | #59637C | 0.057 |
| Deuteranopia (no green cones) | #4D5A7B | 0.050 |
| Tritanopia (no blue cones) | #006C6C | 0.041 |
| Achromatopsia (no color) | #5E5E5E | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25657B
#25657B
oklch(47.6% 0.073 224.4)
- #7F4F39
#7F4F39
oklch(47.7% 0.073 45.2)
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 #25657B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.036
- Denim #3B638C ΔE 0.037
- Petrol #005F6A ΔE 0.038
- YInMn Blue #415A77 ΔE 0.039
- Peacock Blue #016795 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- Slate #516572 ΔE 0.047
- Deep Turquoise #017374 ΔE 0.049
Use #25657B 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.