#40304F
Closest named color: Space Cadet (#2B2D42). oklch(34.1% 0.057 307.3), rgb(64, 48, 79).
Aa
White text reads best on this color (11.97:1).
About this color
#40304F is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.057 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.046 away. White text reads best on it, at 11.97:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.75:1 |
| White text | 11.97:1 |
Values
| HEX | #40304F |
| RGB | rgb(64, 48, 79) |
| HSL | hsl(271, 24%, 25%) |
| OKLCH | oklch(34.1% 0.057 307.3) |
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 #40304F | 11.97:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #40304F | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #40304F text on white | 11.97:1 | AAA | Lc 97.4 | Preferred for body text |
| #40304F text on black | 1.75:1 | 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 900.
-
Step 50
50
#F6F4F8
oklch(97% 0.006 308.4)
-
Step 100
100
#ECE8F0
oklch(93.6% 0.011 308.3)
-
Step 200
200
#DDD5E6
oklch(88.4% 0.025 306.9)
-
Step 300
300
#C8BAD6
oklch(80.9% 0.042 307.9)
-
Step 400
400
#AC96C2
oklch(70.8% 0.067 307.4)
-
Step 500
500
#977BB3
oklch(63% 0.088 306.9)
-
Step 600
600
#82649E
oklch(55.6% 0.094 307.3)
-
Step 700
700
#6E5387
oklch(49.2% 0.086 307.3)
-
Step 800
800
#5A446E
oklch(42.8% 0.073 307.6)
-
Step 900
900 (this color)
#40304F
oklch(34.1% 0.057 307.3)
-
Step 950
950
#2B2234
oklch(27% 0.035 307)
#40304F 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) | #2A3650 | 0.039 |
| Deuteranopia (no green cones) | #2D374E | 0.037 |
| Tritanopia (no blue cones) | #3E353B | 0.043 |
| Achromatopsia (no color) | #373737 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40304F
#40304F
oklch(34.1% 0.057 307.3)
- #303E1C
#303E1C
oklch(34.2% 0.057 127.6)
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 #40304F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.046
- Gunmetal #293241 ΔE 0.049
- Onyx #343A40 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.071
- Charcoal #264653 ΔE 0.074
Use #40304F 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.