#24489E
Closest named color: Cobalt (#1E488F). oklch(42.8% 0.146 264.1), rgb(36, 72, 158).
Aa
White text reads best on this color (8.41:1).
About this color
#24489E is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.146 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.026 away. White text reads best on it, at 8.41:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.49:1 |
| White text | 8.41:1 |
Values
| HEX | #24489E |
| RGB | rgb(36, 72, 158) |
| HSL | hsl(222, 63%, 38%) |
| OKLCH | oklch(42.8% 0.146 264.1) |
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 #24489E | 8.41:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #24489E | 2.49:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #24489E text on white | 8.41:1 | AAA | Lc 88.5 | Fine for body text |
| #24489E text on black | 2.49:1 | Fails | Lc -13.6 | 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 800.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A5C1F9
oklch(81% 0.085 263.9)
-
Step 400
400
#759EF6
oklch(70.7% 0.137 264.3)
-
Step 500
500
#5283F2
oklch(63.2% 0.175 264.1)
-
Step 600
600
#3769E0
oklch(55.5% 0.19 264)
-
Step 700
700
#2A57C3
oklch(49.1% 0.176 263.9)
-
Step 800
800 (this color)
#24489E
oklch(42.8% 0.146 264.1)
-
Step 900
900
#213D7D
oklch(37.6% 0.114 264)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#24489E 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) | #0353A1 | 0.031 |
| Deuteranopia (no green cones) | #00489C | 0.021 |
| Tritanopia (no blue cones) | #005D6C | 0.115 |
| Achromatopsia (no color) | #4D4D4D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24489E
#24489E
oklch(42.8% 0.146 264.1)
- #664A00
#664A00
oklch(42.8% 0.088 83.6)
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 #24489E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.026
- Dusk Blue #26538D ΔE 0.044
- Blueberry #464196 ΔE 0.045
- Sapphire #2138AB ΔE 0.045
- Light Navy #155084 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.065
Use #24489E 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.