#242F68
Closest named color: Marine Blue (#01386A). oklch(33% 0.1 271.6), rgb(36, 47, 104).
Aa
White text reads best on this color (12.48:1).
About this color
#242F68 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.100 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.035 away. White text reads best on it, at 12.48:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.68:1 |
| White text | 12.48:1 |
Values
| HEX | #242F68 |
| RGB | rgb(36, 47, 104) |
| HSL | hsl(230, 49%, 27%) |
| OKLCH | oklch(33% 0.1 271.6) |
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 #242F68 | 12.48:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #242F68 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #242F68 text on white | 12.48:1 | AAA | Lc 98.1 | Preferred for body text |
| #242F68 text on black | 1.68:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AFBEF2
oklch(80.8% 0.076 272.1)
-
Step 400
400
#869BEC
oklch(70.7% 0.121 271.9)
-
Step 500
500
#6980E5
oklch(63% 0.154 271.7)
-
Step 600
600
#5267D4
oklch(55.5% 0.168 271.7)
-
Step 700
700
#4355B7
oklch(49% 0.155 271.6)
-
Step 800
800
#374694
oklch(42.6% 0.129 271.7)
-
Step 900
900 (this color)
#242F68
oklch(33% 0.1 271.6)
-
Step 950
950
#1C2345
oklch(26.9% 0.064 272.7)
#242F68 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) | #0E376A | 0.029 |
| Deuteranopia (no green cones) | #003167 | 0.032 |
| Tritanopia (no blue cones) | #003C46 | 0.086 |
| Achromatopsia (no color) | #343434 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242F68
#242F68
oklch(33% 0.1 271.6)
- #423400
#423400
oklch(33.1% 0.068 92.2)
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 #242F68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.035
- Marine #042E60 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.038
- Midnight Blue #191970 ΔE 0.060
- Twilight Blue #0A437A ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.068
- Midnight Green #073B4C ΔE 0.073
Use #242F68 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.