#24306B
Closest named color: Marine Blue (#01386A). oklch(33.5% 0.103 271.1), rgb(36, 48, 107).
Aa
White text reads best on this color (12.27:1).
About this color
#24306B is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.103 and its hue 271°. 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 12.27:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.27:1 |
Values
| HEX | #24306B |
| RGB | rgb(36, 48, 107) |
| HSL | hsl(230, 50%, 28%) |
| OKLCH | oklch(33.5% 0.103 271.1) |
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 #24306B | 12.27:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #24306B | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #24306B text on white | 12.27:1 | AAA | Lc 97.7 | Preferred for body text |
| #24306B text on black | 1.71:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#AEBEF4
oklch(80.8% 0.079 271.7)
-
Step 400
400
#849BEE
oklch(70.6% 0.125 271.2)
-
Step 500
500
#6780E8
oklch(63% 0.158 271.1)
-
Step 600
600
#5067D7
oklch(55.6% 0.173 271)
-
Step 700
700
#4155BA
oklch(49.1% 0.16 270.9)
-
Step 800
800
#364697
oklch(42.8% 0.133 271.3)
-
Step 900
900 (this color)
#24306B
oklch(33.5% 0.103 271.1)
-
Step 950
950
#1B2346
oklch(26.9% 0.066 271.6)
#24306B 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) | #0C386D | 0.029 |
| Deuteranopia (no green cones) | #00326A | 0.031 |
| Tritanopia (no blue cones) | #003E48 | 0.089 |
| Achromatopsia (no color) | #353535 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24306B
#24306B
oklch(33.5% 0.103 271.1)
- #443500
#443500
oklch(33.6% 0.069 91.2)
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 #24306B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.034
- Marine #042E60 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.058
- Midnight Blue #191970 ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.073
- Midnight Green #073B4C ΔE 0.075
Use #24306B 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.