#282E4B
Closest named color: Space Cadet (#2B2D42). oklch(31% 0.053 274), rgb(40, 46, 75).
Aa
White text reads best on this color (13.26:1).
About this color
#282E4B is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.053 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.016 away. White text reads best on it, at 13.26:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.58:1 |
| White text | 13.26:1 |
Values
| HEX | #282E4B |
| RGB | rgb(40, 46, 75) |
| HSL | hsl(230, 30%, 23%) |
| OKLCH | oklch(31% 0.053 274) |
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 #282E4B | 13.26:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #282E4B | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #282E4B text on white | 13.26:1 | AAA | Lc 99.6 | Preferred for body text |
| #282E4B text on black | 1.58:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEEA
oklch(80.9% 0.063 274.9)
-
Step 400
400
#8D9CDF
oklch(70.7% 0.1 273.9)
-
Step 500
500
#7282D6
oklch(63.1% 0.128 274)
-
Step 600
600
#5B6AC4
oklch(55.6% 0.14 273.9)
-
Step 700
700
#4B58A9
oklch(49.1% 0.129 273.8)
-
Step 800
800
#3E4889
oklch(42.7% 0.108 274.4)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950 (this color)
#282E4B
oklch(31% 0.053 274)
#282E4B 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) | #24314C | 0.010 |
| Deuteranopia (no green cones) | #212E4A | 0.011 |
| Tritanopia (no blue cones) | #1D3439 | 0.046 |
| Achromatopsia (no color) | #303030 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282E4B
#282E4B
oklch(31% 0.053 274)
- #39300C
#39300C
oklch(31.1% 0.053 94.9)
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 #282E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.016
- Gunmetal #293241 ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.042
- Oxford Blue #1B263B ΔE 0.043
- Midnight Green #073B4C ΔE 0.050
- Marine #042E60 ΔE 0.052
- Onyx #343A40 ΔE 0.054
Use #282E4B 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.