#242B4E
Closest named color: Space Cadet (#2B2D42). oklch(30.1% 0.064 273.4), rgb(36, 43, 78).
Aa
White text reads best on this color (13.72:1).
About this color
#242B4E is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.064 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.027 away. White text reads best on it, at 13.72:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.53:1 |
| White text | 13.72:1 |
Values
| HEX | #242B4E |
| RGB | rgb(36, 43, 78) |
| HSL | hsl(230, 37%, 22%) |
| OKLCH | oklch(30.1% 0.064 273.4) |
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 #242B4E | 13.72:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #242B4E | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #242B4E text on white | 13.72:1 | AAA | Lc 100.2 | Preferred for body text |
| #242B4E text on black | 1.53:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B0BEF2
oklch(80.9% 0.075 272.9)
-
Step 400
400
#889AEC
oklch(70.6% 0.122 273.5)
-
Step 500
500
#6D7FE6
oklch(63.1% 0.155 273.7)
-
Step 600
600
#5666D4
oklch(55.6% 0.168 273.4)
-
Step 700
700
#4754B8
oklch(49.1% 0.157 273.6)
-
Step 800
800
#3A4595
oklch(42.7% 0.131 273.6)
-
Step 900
900
#313B76
oklch(37.6% 0.101 273.4)
-
Step 950
950 (this color)
#242B4E
oklch(30.1% 0.064 273.4)
#242B4E 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) | #1D2F4F | 0.015 |
| Deuteranopia (no green cones) | #192C4D | 0.016 |
| Tritanopia (no blue cones) | #133238 | 0.057 |
| Achromatopsia (no color) | #2D2D2D | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #242B4E
#242B4E
oklch(30.1% 0.064 273.4)
- #392D00
#392D00
oklch(30.2% 0.062 92.9)
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 #242B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.032
- Gunmetal #293241 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.040
- Marine #042E60 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.053
- Midnight Green #073B4C ΔE 0.057
- Dark #1B2431 ΔE 0.058
Use #242B4E 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.