#28283B
Closest named color: Space Cadet (#2B2D42). oklch(28.6% 0.035 284), rgb(40, 40, 59).
Aa
White text reads best on this color (14.41:1).
About this color
#28283B is a dark, muted purple. In OKLCH its lightness is 29%, its chroma 0.035 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.020 away. White text reads best on it, at 14.41:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.45:1 |
| White text | 14.41:1 |
Values
| HEX | #28283B |
| RGB | rgb(40, 40, 59) |
| HSL | hsl(240, 19%, 19%) |
| OKLCH | oklch(28.6% 0.035 284) |
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 #28283B | 14.41:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #28283B | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #28283B text on white | 14.41:1 | AAA | Lc 101.2 | Preferred for body text |
| #28283B text on black | 1.45:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D7D7E8
oklch(88.4% 0.023 285.9)
-
Step 300
300
#BDBEDB
oklch(81% 0.041 283.9)
-
Step 400
400
#9B9CC9
oklch(70.8% 0.065 283.6)
-
Step 500
500
#8383BB
oklch(63.2% 0.084 283.7)
-
Step 600
600
#6D6CA7
oklch(55.7% 0.091 283.8)
-
Step 700
700
#5B5A8F
oklch(49.2% 0.084 283.7)
-
Step 800
800
#4A4974
oklch(42.6% 0.071 284)
-
Step 900
900
#3E3E5E
oklch(37.8% 0.054 283.5)
-
Step 950
950 (this color)
#28283B
oklch(28.6% 0.035 284)
#28283B 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) | #232A3C | 0.010 |
| Deuteranopia (no green cones) | #22293B | 0.010 |
| Tritanopia (no blue cones) | #232B2F | 0.029 |
| Achromatopsia (no color) | #2A2A2A | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28283B
#28283B
oklch(28.6% 0.035 284)
- #2D2B16
#2D2B16
oklch(28.5% 0.035 103.6)
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 #28283B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.023
- Dark #1B2431 ΔE 0.032
- Gunmetal #293241 ΔE 0.033
- Jet #212529 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.063
- Onyx #343A40 ΔE 0.064
Use #28283B 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.