#24307A
Closest named color: Marine Blue (#01386A). oklch(34.7% 0.126 271.3), rgb(36, 48, 122).
Aa
White text reads best on this color (11.80:1).
About this color
#24307A is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.126 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.045 away. White text reads best on it, at 11.80:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.80:1 |
Values
| HEX | #24307A |
| RGB | rgb(36, 48, 122) |
| HSL | hsl(232, 54%, 31%) |
| OKLCH | oklch(34.7% 0.126 271.3) |
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 #24307A | 11.80:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #24307A | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #24307A text on white | 11.80:1 | AAA | Lc 96.7 | Preferred for body text |
| #24307A text on black | 1.77:1 | 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
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FD
oklch(88.5% 0.053 271.1)
-
Step 300
300
#AABEFE
oklch(81% 0.094 270.8)
-
Step 400
400
#7F99FE
oklch(70.8% 0.151 271.2)
-
Step 500
500
#617BFC
oklch(63% 0.193 271.3)
-
Step 600
600
#4B60EC
oklch(55.6% 0.211 271.3)
-
Step 700
700
#3D4ECD
oklch(49.1% 0.195 271.3)
-
Step 800
800
#3241A6
oklch(42.7% 0.162 271.3)
-
Step 900
900 (this color)
#24307A
oklch(34.7% 0.126 271.3)
-
Step 950
950
#19224D
oklch(27.1% 0.08 271.2)
#24307A 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) | #003C7C | 0.038 |
| Deuteranopia (no green cones) | #003479 | 0.029 |
| Tritanopia (no blue cones) | #004250 | 0.102 |
| Achromatopsia (no color) | #383838 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24307A
#24307A
oklch(34.7% 0.126 271.3)
- #473800
#473800
oklch(34.7% 0.071 92)
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 #24307A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.045
- Twilight Blue #0A437A ΔE 0.053
- Marine #042E60 ΔE 0.057
- Midnight Blue #191970 ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.065
- Cobalt #1E488F ΔE 0.071
- Royal #0C1793 ΔE 0.072
- Dark Slate Blue #483D8B ΔE 0.074
Use #24307A 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.