#232A40
Closest named color: Space Cadet (#2B2D42). oklch(28.9% 0.042 270.1), rgb(35, 42, 64).
Aa
White text reads best on this color (14.22:1).
About this color
#232A40 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.042 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.018 away. White text reads best on it, at 14.22:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.47:1 |
| White text | 14.22:1 |
Values
| HEX | #232A40 |
| RGB | rgb(35, 42, 64) |
| HSL | hsl(226, 29%, 19%) |
| OKLCH | oklch(28.9% 0.042 270.1) |
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 #232A40 | 14.22:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #232A40 | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #232A40 text on white | 14.22:1 | AAA | Lc 100.9 | Preferred for body text |
| #232A40 text on black | 1.47:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E1
oklch(80.9% 0.049 269.5)
-
Step 400
400
#8D9FD3
oklch(70.8% 0.079 269.6)
-
Step 500
500
#7286C7
oklch(63.1% 0.101 270.3)
-
Step 600
600
#5B6FB3
oklch(55.6% 0.109 270.2)
-
Step 700
700
#4A5C9A
oklch(49% 0.102 270.1)
-
Step 800
800
#3D4C7D
oklch(42.7% 0.084 269.7)
-
Step 900
900
#343F65
oklch(37.6% 0.067 270.7)
-
Step 950
950 (this color)
#232A40
oklch(28.9% 0.042 270.1)
#232A40 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) | #232C41 | 0.007 |
| Deuteranopia (no green cones) | #202A3F | 0.005 |
| Tritanopia (no blue cones) | #1A2E32 | 0.036 |
| Achromatopsia (no color) | #2B2B2B | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #232A40
#232A40
oklch(28.9% 0.042 270.1)
- #332A11
#332A11
oklch(28.9% 0.041 89.9)
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 #232A40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.021
- Gunmetal #293241 ΔE 0.029
- Dark #1B2431 ΔE 0.035
- Jet #212529 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.055
- Midnight Green #073B4C ΔE 0.057
Use #232A40 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.