#25459E
Closest named color: Cobalt (#1E488F). oklch(42.2% 0.15 265.4), rgb(37, 69, 158).
Aa
White text reads best on this color (8.66:1).
About this color
#25459E is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.150 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.027 away. White text reads best on it, at 8.66:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.42:1 |
| White text | 8.66:1 |
Values
| HEX | #25459E |
| RGB | rgb(37, 69, 158) |
| HSL | hsl(224, 62%, 38%) |
| OKLCH | oklch(42.2% 0.15 265.4) |
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 #25459E | 8.66:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #25459E | 2.42:1 | Fails | Lc 14.7 | Not readable |
| #25459E text on white | 8.66:1 | AAA | Lc 89.3 | Fine for body text |
| #25459E text on black | 2.42:1 | Fails | Lc -13.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#769DF8
oklch(70.7% 0.141 265.4)
-
Step 500
500
#5481F4
oklch(63% 0.179 265.5)
-
Step 600
600
#3B68E3
oklch(55.7% 0.194 265.3)
-
Step 700
700
#2E55C5
oklch(49% 0.181 265.5)
-
Step 800
800 (this color)
#25459E
oklch(42.2% 0.15 265.4)
-
Step 900
900
#233C7F
oklch(37.7% 0.118 265.6)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#25459E 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) | #0051A1 | 0.033 |
| Deuteranopia (no green cones) | #00469C | 0.022 |
| Tritanopia (no blue cones) | #005B6A | 0.119 |
| Achromatopsia (no color) | #4B4B4B | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25459E
#25459E
oklch(42.2% 0.15 265.4)
- #634900
#634900
oklch(42.2% 0.086 85.1)
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 #25459E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.027
- Sapphire #2138AB ΔE 0.038
- Blueberry #464196 ΔE 0.043
- Dusk Blue #26538D ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.056
- Light Navy #155084 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.065
- Blue Blue #2242C7 ΔE 0.066
Use #25459E 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.