#242F60
Closest named color: Prussian Blue (#1D3557). oklch(32.4% 0.088 271.2), rgb(36, 47, 96).
Aa
White text reads best on this color (12.72:1).
About this color
#242F60 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.088 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.028 away. White text reads best on it, at 12.72:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.72:1 |
Values
| HEX | #242F60 |
| RGB | rgb(36, 47, 96) |
| HSL | hsl(229, 45%, 26%) |
| OKLCH | oklch(32.4% 0.088 271.2) |
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 #242F60 | 12.72:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #242F60 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #242F60 text on white | 12.72:1 | AAA | Lc 98.6 | Preferred for body text |
| #242F60 text on black | 1.65:1 | 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
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEC
oklch(80.9% 0.066 271.4)
-
Step 400
400
#899DE3
oklch(70.8% 0.105 271.3)
-
Step 500
500
#6C83DA
oklch(63.1% 0.134 271)
-
Step 600
600
#556BC8
oklch(55.7% 0.146 271)
-
Step 700
700
#4658AD
oklch(49.1% 0.136 271.5)
-
Step 800
800
#39498C
oklch(42.8% 0.112 270.9)
-
Step 900
900 (this color)
#242F60
oklch(32.4% 0.088 271.2)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#242F60 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) | #173562 | 0.021 |
| Deuteranopia (no green cones) | #0E305F | 0.024 |
| Tritanopia (no blue cones) | #003A42 | 0.078 |
| Achromatopsia (no color) | #333333 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242F60
#242F60
oklch(32.4% 0.088 271.2)
- #403200
#403200
oklch(32.3% 0.066 91.6)
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 #242F60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.028
- Marine #042E60 ΔE 0.032
- Marine Blue #01386A ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.057
- Gunmetal #293241 ΔE 0.059
- Midnight Green #073B4C ΔE 0.063
- Midnight Blue #191970 ΔE 0.066
Use #242F60 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.