#25517E
Closest named color: Light Navy (#155084). oklch(42.7% 0.09 251.2), rgb(37, 81, 126).
Aa
White text reads best on this color (8.21:1).
About this color
#25517E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.090 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.016 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #25517E |
| RGB | rgb(37, 81, 126) |
| HSL | hsl(210, 55%, 32%) |
| OKLCH | oklch(42.7% 0.09 251.2) |
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 #25517E | 8.21:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #25517E | 2.55:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #25517E text on white | 8.21:1 | AAA | Lc 88.2 | Fine for body text |
| #25517E text on black | 2.55:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#A8C4E2
oklch(81% 0.052 250.3)
-
Step 400
400
#79A4D4
oklch(70.6% 0.085 251.8)
-
Step 500
500
#568DC8
oklch(63.1% 0.107 251.4)
-
Step 600
600
#3976B5
oklch(55.5% 0.117 251.4)
-
Step 700
700
#2B639C
oklch(49.1% 0.109 251.4)
-
Step 800
800 (this color)
#25517E
oklch(42.7% 0.09 251.2)
-
Step 900
900
#234365
oklch(37.5% 0.07 251.5)
-
Step 950
950
#15283B
oklch(27.1% 0.044 249.7)
#25517E 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) | #3D5380 | 0.028 |
| Deuteranopia (no green cones) | #304B7D | 0.019 |
| Tritanopia (no blue cones) | #005C61 | 0.070 |
| Achromatopsia (no color) | #4F4F4F | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25517E
#25517E
oklch(42.7% 0.09 251.2)
- #6D4504
#6D4504
oklch(42.7% 0.09 71.1)
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 #25517E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.016
- Deep Sea Blue #015482 ΔE 0.019
- Dusk Blue #26538D ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.043
- YInMn Blue #415A77 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.050
Use #25517E 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.