#273970
Closest named color: Marine Blue (#01386A). oklch(36.1% 0.098 267.7), rgb(39, 57, 112).
Aa
White text reads best on this color (11.02:1).
About this color
#273970 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.098 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.034 away. White text reads best on it, at 11.02:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.90:1 |
| White text | 11.02:1 |
Values
| HEX | #273970 |
| RGB | rgb(39, 57, 112) |
| HSL | hsl(225, 48%, 30%) |
| OKLCH | oklch(36.1% 0.098 267.7) |
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 #273970 | 11.02:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #273970 | 1.90:1 | Fails | Lc 8.6 | Not readable |
| #273970 text on white | 11.02:1 | AAA | Lc 95.3 | Preferred for body text |
| #273970 text on black | 1.90:1 | Fails | Lc -7.4 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#819DEA
oklch(70.6% 0.118 268.1)
-
Step 500
500
#6283E3
oklch(63% 0.149 267.7)
-
Step 600
600
#4A6BD1
oklch(55.7% 0.162 267.5)
-
Step 700
700
#3C58B5
oklch(49.1% 0.151 267.9)
-
Step 800
800
#314993
oklch(42.8% 0.125 267.4)
-
Step 900
900 (this color)
#273970
oklch(36.1% 0.098 267.7)
-
Step 950
950
#192444
oklch(26.9% 0.062 267.8)
#273970 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) | #1E4072 | 0.021 |
| Deuteranopia (no green cones) | #11396F | 0.022 |
| Tritanopia (no blue cones) | #00464F | 0.084 |
| Achromatopsia (no color) | #3C3C3C | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #273970
#273970
oklch(36.1% 0.098 267.7)
- #4E3A00
#4E3A00
oklch(36.1% 0.074 86.8)
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 #273970, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.034
- Twilight Blue #0A437A ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.047
- Marine #042E60 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.061
- Cobalt #1E488F ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.070
Use #273970 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.