#25365D
Closest named color: Prussian Blue (#1D3557). oklch(33.9% 0.072 265), rgb(37, 54, 93).
Aa
White text reads best on this color (11.90:1).
About this color
#25365D is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.072 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.015 away. White text reads best on it, at 11.90:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.90:1 |
Values
| HEX | #25365D |
| RGB | rgb(37, 54, 93) |
| HSL | hsl(222, 43%, 25%) |
| OKLCH | oklch(33.9% 0.072 265) |
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 #25365D | 11.90:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #25365D | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #25365D text on white | 11.90:1 | AAA | Lc 97.2 | Preferred for body text |
| #25365D text on black | 1.76:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#B0C1E5
oklch(81% 0.054 265.2)
-
Step 400
400
#86A0D7
oklch(70.7% 0.086 264.7)
-
Step 500
500
#6887CD
oklch(63% 0.112 265.2)
-
Step 600
600
#5070BA
oklch(55.6% 0.121 265.1)
-
Step 700
700
#415EA0
oklch(49.2% 0.111 264.7)
-
Step 800
800
#364D82
oklch(42.8% 0.093 265)
-
Step 900
900 (this color)
#25365D
oklch(33.9% 0.072 265)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#25365D 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) | #263A5F | 0.013 |
| Deuteranopia (no green cones) | #1F355C | 0.009 |
| Tritanopia (no blue cones) | #033F45 | 0.065 |
| Achromatopsia (no color) | #373737 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25365D
#25365D
oklch(33.9% 0.072 265)
- #483400
#483400
oklch(33.9% 0.069 84.8)
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 #25365D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.015
- Marine Blue #01386A ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.037
- Marine #042E60 ΔE 0.044
- Midnight Green #073B4C ΔE 0.047
- Gunmetal #293241 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.054
Use #25365D 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.