#25315F
Closest named color: Prussian Blue (#1D3557). oklch(32.8% 0.083 270.3), rgb(37, 49, 95).
Aa
White text reads best on this color (12.47:1).
About this color
#25315F is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.083 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.023 away. White text reads best on it, at 12.47:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.47:1 |
Values
| HEX | #25315F |
| RGB | rgb(37, 49, 95) |
| HSL | hsl(228, 44%, 26%) |
| OKLCH | oklch(32.8% 0.083 270.3) |
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 #25315F | 12.47:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #25315F | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #25315F text on white | 12.47:1 | AAA | Lc 98.2 | Preferred for body text |
| #25315F text on black | 1.68:1 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#899DDF
oklch(70.6% 0.1 270.8)
-
Step 500
500
#6C84D6
oklch(63.1% 0.127 270.1)
-
Step 600
600
#556CC3
oklch(55.6% 0.137 270.3)
-
Step 700
700
#455AA9
oklch(49.2% 0.128 270)
-
Step 800
800
#394A89
oklch(42.8% 0.106 270.1)
-
Step 900
900 (this color)
#25315F
oklch(32.8% 0.083 270.3)
-
Step 950
950
#1D2540
oklch(27.1% 0.052 270.2)
#25315F 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) | #1C3761 | 0.019 |
| Deuteranopia (no green cones) | #14315E | 0.020 |
| Tritanopia (no blue cones) | #013B43 | 0.074 |
| Achromatopsia (no color) | #343434 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25315F
#25315F
oklch(32.8% 0.083 270.3)
- #423300
#423300
oklch(32.8% 0.067 90.6)
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 #25315F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.023
- Marine #042E60 ΔE 0.035
- Marine Blue #01386A ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.055
- Midnight Green #073B4C ΔE 0.058
- Twilight Blue #0A437A ΔE 0.065
Use #25315F 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.