#25639D
Closest named color: Peacock Blue (#016795). oklch(48.9% 0.112 250.1), rgb(37, 99, 157).
Aa
White text reads best on this color (6.26:1).
About this color
#25639D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.112 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.024 away. White text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.35:1 |
| White text | 6.26:1 |
Values
| HEX | #25639D |
| RGB | rgb(37, 99, 157) |
| HSL | hsl(209, 62%, 38%) |
| OKLCH | oklch(48.9% 0.112 250.1) |
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 #25639D | 6.26:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #25639D | 3.35:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #25639D text on white | 6.26:1 | AA | Lc 80.9 | Fine for body text |
| #25639D text on black | 3.35:1 | AA large text | Lc -21.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A7C4E3
oklch(80.9% 0.054 250.2)
-
Step 400
400
#76A5D5
oklch(70.7% 0.087 249.7)
-
Step 500
500
#518ECA
oklch(63.2% 0.111 249.6)
-
Step 600
600
#3477B7
oklch(55.7% 0.121 250)
-
Step 700
700 (this color)
#25639D
oklch(48.9% 0.112 250.1)
-
Step 800
800
#215180
oklch(42.6% 0.094 250.6)
-
Step 900
900
#214467
oklch(37.8% 0.073 250.3)
-
Step 950
950
#14283C
oklch(27.1% 0.046 249.9)
#25639D 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) | #48669F | 0.036 |
| Deuteranopia (no green cones) | #365B9C | 0.025 |
| Tritanopia (no blue cones) | #007178 | 0.084 |
| Achromatopsia (no color) | #606060 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25639D
#25639D
oklch(48.9% 0.112 250.1)
- #865400
#865400
oklch(49.1% 0.106 70.2)
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 #25639D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.029
- Denim #3B638C ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- Mid Blue #276AB3 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.038
- Ocean Blue #03719C ΔE 0.042
- French Blue #436BAD ΔE 0.045
Use #25639D 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.