#02255E
Closest named color: Marine (#042E60). oklch(28.2% 0.109 259.8), rgb(2, 37, 94).
Aa
White text reads best on this color (14.69:1).
About this color
#02255E is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.109 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.027 away. White text reads best on it, at 14.69:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.42:1 |
| White text | 14.69:1 |
Values
| HEX | #02255E |
| RGB | rgb(2, 37, 94) |
| HSL | hsl(217, 96%, 19%) |
| OKLCH | oklch(28.2% 0.109 259.8) |
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 #02255E | 14.69:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #02255E | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #02255E text on white | 14.69:1 | AAA | Lc 101.0 | Preferred for body text |
| #02255E text on black | 1.42:1 | 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 950.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DBFF
oklch(88.6% 0.056 259.3)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3783FF
oklch(63% 0.199 259.9)
-
Step 600
600
#0067F3
oklch(55.5% 0.225 259.9)
-
Step 700
700
#0056CE
oklch(49% 0.199 259.9)
-
Step 800
800
#0046AB
oklch(42.6% 0.173 259.9)
-
Step 900
900
#003A90
oklch(37.6% 0.152 259.9)
-
Step 950
950 (this color)
#02255E
oklch(28.2% 0.109 259.8)
#02255E 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) | #002D60 | 0.023 |
| Deuteranopia (no green cones) | #00245D | 0.004 |
| Tritanopia (no blue cones) | #00333D | 0.082 |
| Achromatopsia (no color) | #282828 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02255E
#02255E
oklch(28.2% 0.109 259.8)
- #382600
#382600
oklch(28.3% 0.058 81.5)
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 #02255E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.027
- Midnight Blue #191970 ΔE 0.045
- Marine Blue #01386A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.061
- Darkblue #030764 ΔE 0.062
- Dark Royal Blue #02066F ΔE 0.064
- Oxford Blue #1B263B ΔE 0.068
- Deep Blue #040273 ΔE 0.069
Use #02255E 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.