#242E73
Closest named color: Marine Blue (#01386A). oklch(33.7% 0.118 272.2), rgb(36, 46, 115).
Aa
White text reads best on this color (12.25:1).
About this color
#242E73 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.041 away. White text reads best on it, at 12.25:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.25:1 |
Values
| HEX | #242E73 |
| RGB | rgb(36, 46, 115) |
| HSL | hsl(232, 52%, 30%) |
| OKLCH | oklch(33.7% 0.118 272.2) |
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 #242E73 | 12.25:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #242E73 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #242E73 text on white | 12.25:1 | AAA | Lc 97.6 | Preferred for body text |
| #242E73 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBEFB
oklch(81% 0.089 271.6)
-
Step 400
400
#8299F9
oklch(70.7% 0.143 272.1)
-
Step 500
500
#667CF5
oklch(63% 0.181 272.4)
-
Step 600
600
#4F62E4
oklch(55.6% 0.197 272.1)
-
Step 700
700
#4150C6
oklch(49.1% 0.183 272.3)
-
Step 800
800
#3542A0
oklch(42.6% 0.152 272.3)
-
Step 900
900 (this color)
#242E73
oklch(33.7% 0.118 272.2)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#242E73 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) | #003975 | 0.037 |
| Deuteranopia (no green cones) | #003272 | 0.031 |
| Tritanopia (no blue cones) | #003F4B | 0.099 |
| Achromatopsia (no color) | #353535 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242E73
#242E73
oklch(33.7% 0.118 272.2)
- #443600
#443600
oklch(33.8% 0.069 92.7)
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 #242E73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.041
- Marine #042E60 ΔE 0.047
- Midnight Blue #191970 ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.059
- Royal #0C1793 ΔE 0.077
- Cobalt #1E488F ΔE 0.082
- Dark Slate Blue #483D8B ΔE 0.083
Use #242E73 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.