#253478
Closest named color: Marine Blue (#01386A). oklch(35.5% 0.117 270), rgb(37, 52, 120).
Aa
White text reads best on this color (11.40:1).
About this color
#253478 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.117 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.040 away. White text reads best on it, at 11.40:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #253478 |
| RGB | rgb(37, 52, 120) |
| HSL | hsl(229, 53%, 31%) |
| OKLCH | oklch(35.5% 0.117 270) |
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 #253478 | 11.40:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #253478 | 1.84:1 | Fails | Lc 7.9 | Not readable |
| #253478 text on white | 11.40:1 | AAA | Lc 96.0 | Preferred for body text |
| #253478 text on black | 1.84:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABEFA
oklch(80.8% 0.088 270.1)
-
Step 400
400
#7F9AF8
oklch(70.6% 0.141 270.4)
-
Step 500
500
#607EF5
oklch(63.1% 0.18 269.9)
-
Step 600
600
#4964E4
oklch(55.6% 0.196 269.9)
-
Step 700
700
#3B52C6
oklch(49.1% 0.182 269.8)
-
Step 800
800
#3144A0
oklch(42.8% 0.15 270)
-
Step 900
900 (this color)
#253478
oklch(35.5% 0.117 270)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#253478 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) | #023E7A | 0.034 |
| Deuteranopia (no green cones) | #003677 | 0.029 |
| Tritanopia (no blue cones) | #004450 | 0.097 |
| Achromatopsia (no color) | #3A3A3A | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #253478
#253478
oklch(35.5% 0.117 270)
- #4A3900
#4A3900
oklch(35.3% 0.072 89.9)
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 #253478, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.040
- Twilight Blue #0A437A ΔE 0.044
- Marine #042E60 ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.060
- Cobalt #1E488F ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.069
- Midnight Blue #191970 ΔE 0.072
- Light Navy #155084 ΔE 0.079
Use #253478 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.