#25429A
Closest named color: Cobalt (#1E488F). oklch(41.3% 0.148 266.1), rgb(37, 66, 154).
Aa
White text reads best on this color (9.03:1).
About this color
#25429A is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.148 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.025 away. White text reads best on it, at 9.03:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.32:1 |
| White text | 9.03:1 |
Values
| HEX | #25429A |
| RGB | rgb(37, 66, 154) |
| HSL | hsl(225, 61%, 37%) |
| OKLCH | oklch(41.3% 0.148 266.1) |
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 #25429A | 9.03:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #25429A | 2.32:1 | Fails | Lc 13.7 | Not readable |
| #25429A text on white | 9.03:1 | AAA | Lc 90.3 | Preferred for body text |
| #25429A text on black | 2.32:1 | Fails | Lc -12.0 | 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
#A7C0F9
oklch(80.9% 0.086 266.1)
-
Step 400
400
#789DF7
oklch(70.8% 0.139 266)
-
Step 500
500
#5781F3
oklch(63.1% 0.177 266.2)
-
Step 600
600
#3E67E2
oklch(55.5% 0.193 266.2)
-
Step 700
700
#3155C4
oklch(49.1% 0.178 266.2)
-
Step 800
800 (this color)
#25429A
oklch(41.3% 0.148 266.1)
-
Step 900
900
#253C7E
oklch(37.7% 0.115 266.4)
-
Step 950
950
#16244A
oklch(27.1% 0.073 266.4)
#25429A 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) | #004E9D | 0.034 |
| Deuteranopia (no green cones) | #004498 | 0.022 |
| Tritanopia (no blue cones) | #005867 | 0.118 |
| Achromatopsia (no color) | #494949 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25429A
#25429A
oklch(41.3% 0.148 266.1)
- #5F4700
#5F4700
oklch(41.2% 0.084 86.4)
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 #25429A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.025
- Sapphire #2138AB ΔE 0.037
- Blueberry #464196 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.052
- Dusk Blue #26538D ΔE 0.054
- Light Navy #155084 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.070
Use #25429A 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.