#253770
Closest named color: Marine Blue (#01386A). oklch(35.5% 0.101 267.8), rgb(37, 55, 112).
Aa
White text reads best on this color (11.29:1).
About this color
#253770 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.101 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.031 away. White text reads best on it, at 11.29:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #253770 |
| RGB | rgb(37, 55, 112) |
| HSL | hsl(226, 50%, 29%) |
| OKLCH | oklch(35.5% 0.101 267.8) |
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 #253770 | 11.29:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #253770 | 1.85:1 | Fails | Lc 8.1 | Not readable |
| #253770 text on white | 11.29:1 | AAA | Lc 95.8 | Preferred for body text |
| #253770 text on black | 1.85:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F3
oklch(81% 0.076 267.3)
-
Step 400
400
#809DEC
oklch(70.7% 0.121 267.9)
-
Step 500
500
#6183E6
oklch(63.2% 0.154 267.6)
-
Step 600
600
#496AD5
oklch(55.7% 0.169 267.7)
-
Step 700
700
#3B57B8
oklch(49% 0.157 268)
-
Step 800
800
#304895
oklch(42.7% 0.13 267.6)
-
Step 900
900 (this color)
#253770
oklch(35.5% 0.101 267.8)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#253770 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) | #193E72 | 0.022 |
| Deuteranopia (no green cones) | #09376F | 0.025 |
| Tritanopia (no blue cones) | #00444E | 0.085 |
| Achromatopsia (no color) | #3A3A3A | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #253770
#253770
oklch(35.5% 0.101 267.8)
- #4C3900
#4C3900
oklch(35.6% 0.073 87.6)
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 #253770, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.031
- Twilight Blue #0A437A ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.046
- Marine #042E60 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.066
- Cobalt #1E488F ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.073
Use #253770 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.