#40283B
Closest named color: Space Cadet (#2B2D42). oklch(31.4% 0.047 334.4), rgb(64, 40, 59).
Aa
White text reads best on this color (13.25:1).
About this color
#40283B is a dark, muted purple. In OKLCH its lightness is 31%, its chroma 0.047 and its hue 334°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.041 away. White text reads best on it, at 13.25:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.58:1 |
| White text | 13.25:1 |
Values
| HEX | #40283B |
| RGB | rgb(64, 40, 59) |
| HSL | hsl(312, 23%, 20%) |
| OKLCH | oklch(31.4% 0.047 334.4) |
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 #40283B | 13.25:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #40283B | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #40283B text on white | 13.25:1 | AAA | Lc 99.5 | Preferred for body text |
| #40283B 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
#F9F4F7
oklch(97.2% 0.007 340.4)
-
Step 100
100
#F1E6EE
oklch(93.6% 0.016 335.1)
-
Step 200
200
#E7D2E2
oklch(88.6% 0.031 334)
-
Step 300
300
#D8B4CF
oklch(81% 0.055 335)
-
Step 400
400
#C38CB7
oklch(70.7% 0.088 334.5)
-
Step 500
500
#B36EA5
oklch(63.1% 0.113 334.6)
-
Step 600
600
#9E5590
oklch(55.6% 0.123 334.7)
-
Step 700
700
#87457B
oklch(49.1% 0.115 334.4)
-
Step 800
800
#6E3964
oklch(42.7% 0.095 334.6)
-
Step 900
900
#593152
oklch(37.6% 0.075 333.7)
-
Step 950
950 (this color)
#40283B
oklch(31.4% 0.047 334.4)
#40283B 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) | #282E3C | 0.046 |
| Deuteranopia (no green cones) | #2E313A | 0.042 |
| Tritanopia (no blue cones) | #42292F | 0.023 |
| Achromatopsia (no color) | #303030 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40283B
#40283B
oklch(31.4% 0.047 334.4)
- #1D3826
#1D3826
oklch(31.3% 0.047 153.7)
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 #40283B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.041
- Gunmetal #293241 ΔE 0.048
- Onyx #343A40 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.069
- Jet #212529 ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.074
- Dark #1B2431 ΔE 0.074
- Prussian Blue #1D3557 ΔE 0.075
Use #40283B 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.