#210731
Closest named color: Midnight Purple (#280137). oklch(20.1% 0.081 309.3), rgb(33, 7, 49).
Aa
White text reads best on this color (18.43:1).
About this color
#210731 is a very dark, moderately saturated purple. In OKLCH its lightness is 20%, its chroma 0.081 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.023 away. White text reads best on it, at 18.43:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.13:1 |
| White text | 18.43:1 |
Values
| HEX | #210731 |
| RGB | rgb(33, 7, 49) |
| HSL | hsl(277, 75%, 11%) |
| OKLCH | oklch(20.1% 0.081 309.3) |
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 #210731 | 18.43:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #210731 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #210731 text on white | 18.43:1 | AAA | Lc 104.7 | Preferred for body text |
| #210731 text on black | 1.13:1 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE5F8
oklch(93.5% 0.027 309.2)
-
Step 200
200
#E4D0F4
oklch(88.5% 0.053 310.1)
-
Step 300
300
#D3B0F0
oklch(80.9% 0.096 309.2)
-
Step 400
400
#BD83E8
oklch(70.7% 0.154 309.4)
-
Step 500
500
#AC60E1
oklch(63.2% 0.195 309.1)
-
Step 600
600
#9841CE
oklch(55.6% 0.212 309.4)
-
Step 700
700
#8231B2
oklch(49.1% 0.197 309.6)
-
Step 800
800
#692A90
oklch(42.6% 0.163 309.4)
-
Step 900
900
#552873
oklch(37.6% 0.127 309.2)
-
Step 950
950 (this color)
#210731
oklch(20.1% 0.081 309.3)
#210731 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) | #001332 | 0.067 |
| Deuteranopia (no green cones) | #011430 | 0.067 |
| Tritanopia (no blue cones) | #1F101B | 0.055 |
| Achromatopsia (no color) | #141414 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210731
#210731
oklch(20.1% 0.081 309.3)
- #0E1B00
#0E1B00
oklch(20.2% 0.054 129.9)
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 #210731, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.023
- Very Dark Purple #2A0134 ΔE 0.025
- Dark Purple #35063E ΔE 0.053
- Deep Purple #36013F ΔE 0.056
- Eggplant #380835 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.068
- Aubergine #3D0734 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.071
Use #210731 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.