#242758
Closest named color: Marine (#042E60). oklch(29.9% 0.087 277.2), rgb(36, 39, 88).
Aa
White text reads best on this color (13.94:1).
About this color
#242758 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.087 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.037 away. White text reads best on it, at 13.94:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.50:1 |
| White text | 13.94:1 |
Values
| HEX | #242758 |
| RGB | rgb(36, 39, 88) |
| HSL | hsl(237, 42%, 24%) |
| OKLCH | oklch(29.9% 0.087 277.2) |
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 #242758 | 13.94:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #242758 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #242758 text on white | 13.94:1 | AAA | Lc 100.4 | Preferred for body text |
| #242758 text on black | 1.50:1 | 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 950.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD6FF
oklch(88.4% 0.057 277.5)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7075FF
oklch(63.1% 0.201 277.4)
-
Step 600
600
#5A56F4
oklch(55.5% 0.229 277)
-
Step 700
700
#4B45D5
oklch(49.2% 0.213 277)
-
Step 800
800
#3D3AAC
oklch(42.7% 0.176 277.1)
-
Step 900
900
#333488
oklch(37.8% 0.137 277.1)
-
Step 950
950 (this color)
#242758
oklch(29.9% 0.087 277.2)
#242758 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) | #0D2E5A | 0.031 |
| Deuteranopia (no green cones) | #062A57 | 0.033 |
| Tritanopia (no blue cones) | #0A323B | 0.076 |
| Achromatopsia (no color) | #2C2C2C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242758
#242758
oklch(29.9% 0.087 277.2)
- #362D00
#362D00
oklch(29.8% 0.061 97.2)
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 #242758, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.049
- Oxford Blue #1B263B ΔE 0.056
- Midnight Blue #191970 ΔE 0.059
- Marine Blue #01386A ΔE 0.059
- Gunmetal #293241 ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.070
Use #242758 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.