#25588E
Closest named color: Dusk Blue (#26538D). oklch(45.4% 0.104 252.3), rgb(37, 88, 142).
Aa
White text reads best on this color (7.32:1).
About this color
#25588E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.104 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.014 away. White text reads best on it, at 7.32:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #25588E |
| RGB | rgb(37, 88, 142) |
| HSL | hsl(211, 59%, 35%) |
| OKLCH | oklch(45.4% 0.104 252.3) |
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 #25588E | 7.32:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #25588E | 2.86:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #25588E text on white | 7.32:1 | AAA | Lc 85.2 | Fine for body text |
| #25588E text on black | 2.86:1 | Fails | Lc -16.8 | 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 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBEF
oklch(88.5% 0.033 252.5)
-
Step 300
300
#A5C4E8
oklch(81% 0.061 252.4)
-
Step 400
400
#73A4DC
oklch(70.6% 0.098 252.5)
-
Step 500
500
#4D8DD2
oklch(63.2% 0.124 251.9)
-
Step 600
600
#2E75BF
oklch(55.5% 0.135 252.3)
-
Step 700
700
#2062A5
oklch(49% 0.126 252.3)
-
Step 800
800 (this color)
#25588E
oklch(45.4% 0.104 252.3)
-
Step 900
900
#1E436B
oklch(37.7% 0.081 252.3)
-
Step 950
950
#12283F
oklch(27.1% 0.051 251.2)
#25588E 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) | #3F5B90 | 0.029 |
| Deuteranopia (no green cones) | #30528D | 0.018 |
| Tritanopia (no blue cones) | #00656C | 0.080 |
| Achromatopsia (no color) | #565656 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25588E
#25588E
oklch(45.4% 0.104 252.3)
- #774C00
#774C00
oklch(45.4% 0.097 72.2)
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 #25588E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.014
- Light Navy Blue #2E5A88 ΔE 0.015
- Denim Blue #3B5B92 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.031
- Light Navy #155084 ΔE 0.031
- Denim #3B638C ΔE 0.043
- Peacock Blue #016795 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.045
Use #25588E 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.