#24407C
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.107 263.4), rgb(36, 64, 124).
Aa
White text reads best on this color (10.00:1).
About this color
#24407C is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.107 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.020 away. White text reads best on it, at 10.00:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #24407C |
| RGB | rgb(36, 64, 124) |
| HSL | hsl(221, 55%, 31%) |
| OKLCH | oklch(38.4% 0.107 263.4) |
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 #24407C | 10.00:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #24407C | 2.09:1 | Fails | Lc 11.0 | Not readable |
| #24407C text on white | 10.00:1 | AAA | Lc 92.9 | Preferred for body text |
| #24407C text on black | 2.09:1 | Fails | Lc -9.5 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF8
oklch(88.6% 0.045 263.1)
-
Step 300
300
#A6C1F6
oklch(81% 0.081 263.6)
-
Step 400
400
#769FF1
oklch(70.7% 0.129 263.3)
-
Step 500
500
#5384EC
oklch(63% 0.165 263.4)
-
Step 600
600
#396BDA
oklch(55.5% 0.179 263.4)
-
Step 700
700
#2C59BD
oklch(49.1% 0.165 263.3)
-
Step 800
800
#254999
oklch(42.7% 0.138 263.5)
-
Step 900
900 (this color)
#24407C
oklch(38.4% 0.107 263.4)
-
Step 950
950
#142547
oklch(27% 0.067 262.7)
#24407C 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) | #21477E | 0.020 |
| Deuteranopia (no green cones) | #0F3F7B | 0.018 |
| Tritanopia (no blue cones) | #004E58 | 0.087 |
| Achromatopsia (no color) | #424242 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24407C
#24407C
oklch(38.4% 0.107 263.4)
- #573F00
#573F00
oklch(38.4% 0.079 84.1)
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 #24407C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.020
- Cobalt #1E488F ΔE 0.036
- Light Navy #155084 ΔE 0.046
- Marine Blue #01386A ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.058
- Dusk Blue #26538D ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.064
Use #24407C 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.