#242C64
Closest named color: Marine (#042E60). oklch(32% 0.098 273.4), rgb(36, 44, 100).
Aa
White text reads best on this color (12.96:1).
About this color
#242C64 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.098 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.032 away. White text reads best on it, at 12.96:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.61:1 |
| White text | 12.96:1 |
Values
| HEX | #242C64 |
| RGB | rgb(36, 44, 100) |
| HSL | hsl(233, 47%, 27%) |
| OKLCH | oklch(32% 0.098 273.4) |
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 #242C64 | 12.96:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #242C64 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #242C64 text on white | 12.96:1 | AAA | Lc 99.0 | Preferred for body text |
| #242C64 text on black | 1.61:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6679FF
oklch(63.1% 0.198 273.3)
-
Step 600
600
#4E55FF
oklch(55.6% 0.246 273.3)
-
Step 700
700
#403FE5
oklch(49.1% 0.241 273.3)
-
Step 800
800
#3436B9
oklch(42.7% 0.199 273.4)
-
Step 900
900
#2C3292
oklch(37.8% 0.155 273.5)
-
Step 950
950 (this color)
#242C64
oklch(32% 0.098 273.4)
#242C64 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) | #0A3466 | 0.031 |
| Deuteranopia (no green cones) | #002F63 | 0.033 |
| Tritanopia (no blue cones) | #003943 | 0.085 |
| Achromatopsia (no color) | #313131 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242C64
#242C64
oklch(32% 0.098 273.4)
- #3E3200
#3E3200
oklch(32.1% 0.066 94.3)
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 #242C64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.039
- Marine Blue #01386A ΔE 0.041
- Midnight Blue #191970 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.068
- Gunmetal #293241 ΔE 0.070
- Twilight Blue #0A437A ΔE 0.072
Use #242C64 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.