#25459A
Closest named color: Cobalt (#1E488F). oklch(41.9% 0.144 265.1), rgb(37, 69, 154).
Aa
White text reads best on this color (8.76:1).
About this color
#25459A is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.144 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 8.76:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.39:1 |
| White text | 8.76:1 |
Values
| HEX | #25459A |
| RGB | rgb(37, 69, 154) |
| HSL | hsl(224, 61%, 37%) |
| OKLCH | oklch(41.9% 0.144 265.1) |
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 #25459A | 8.76:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #25459A | 2.39:1 | Fails | Lc 14.4 | Not readable |
| #25459A text on white | 8.76:1 | AAA | Lc 89.6 | Fine for body text |
| #25459A text on black | 2.39:1 | Fails | Lc -12.7 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9F9
oklch(88.4% 0.047 265.5)
-
Step 300
300
#A6C0F8
oklch(80.8% 0.085 265.2)
-
Step 400
400
#779EF5
oklch(70.8% 0.135 264.9)
-
Step 500
500
#5582F0
oklch(63% 0.172 265.1)
-
Step 600
600
#3C69DF
oklch(55.6% 0.187 265.1)
-
Step 700
700
#2F56C2
oklch(49% 0.175 265.3)
-
Step 800
800 (this color)
#25459A
oklch(41.9% 0.144 265.1)
-
Step 900
900
#243D7C
oklch(37.7% 0.111 265.2)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#25459A 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) | #00509D | 0.032 |
| Deuteranopia (no green cones) | #004698 | 0.022 |
| Tritanopia (no blue cones) | #005A68 | 0.115 |
| Achromatopsia (no color) | #4B4B4B | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25459A
#25459A
oklch(41.9% 0.144 265.1)
- #624800
#624800
oklch(41.8% 0.086 84.9)
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 #25459A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Blueberry #464196 ΔE 0.042
- Sapphire #2138AB ΔE 0.042
- Dusk Blue #26538D ΔE 0.047
- Light Navy #155084 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.053
- Twilight Blue #0A437A ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.064
Use #25459A 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.