#25305F
Closest named color: Prussian Blue (#1D3557). oklch(32.6% 0.084 271.2), rgb(37, 48, 95).
Aa
White text reads best on this color (12.59:1).
About this color
#25305F is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.084 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.025 away. White text reads best on it, at 12.59:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.59:1 |
Values
| HEX | #25305F |
| RGB | rgb(37, 48, 95) |
| HSL | hsl(229, 44%, 26%) |
| OKLCH | oklch(32.6% 0.084 271.2) |
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 #25305F | 12.59:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #25305F | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #25305F text on white | 12.59:1 | AAA | Lc 98.4 | Preferred for body text |
| #25305F text on black | 1.66:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F1
oklch(88.4% 0.035 271.5)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#899DE0
oklch(70.7% 0.101 270.9)
-
Step 500
500
#6D83D7
oklch(63% 0.129 271.2)
-
Step 600
600
#566BC5
oklch(55.6% 0.141 271.3)
-
Step 700
700
#4659AA
oklch(49.1% 0.131 271)
-
Step 800
800
#3A498A
oklch(42.7% 0.109 271.4)
-
Step 900
900 (this color)
#25305F
oklch(32.6% 0.084 271.2)
-
Step 950
950
#1D2440
oklch(26.9% 0.053 271.8)
#25305F 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) | #1A3661 | 0.020 |
| Deuteranopia (no green cones) | #12315E | 0.022 |
| Tritanopia (no blue cones) | #023A42 | 0.075 |
| Achromatopsia (no color) | #333333 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25305F
#25305F
oklch(32.6% 0.084 271.2)
- #413300
#413300
oklch(32.7% 0.067 91.9)
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 #25305F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.025
- Marine #042E60 ΔE 0.034
- Marine Blue #01386A ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Gunmetal #293241 ΔE 0.056
- Midnight Green #073B4C ΔE 0.060
- Twilight Blue #0A437A ΔE 0.067
Use #25305F 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.