#231640
Closest named color: Dark Indigo (#1F0954). oklch(24.3% 0.077 294.2), rgb(35, 22, 64).
Aa
White text reads best on this color (16.66:1).
About this color
#231640 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.077 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.047 away. White text reads best on it, at 16.66:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.26:1 |
| White text | 16.66:1 |
Values
| HEX | #231640 |
| RGB | rgb(35, 22, 64) |
| HSL | hsl(259, 49%, 17%) |
| OKLCH | oklch(24.3% 0.077 294.2) |
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 #231640 | 16.66:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #231640 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #231640 text on white | 16.66:1 | AAA | Lc 103.4 | Preferred for body text |
| #231640 text on black | 1.26:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#DAD3F8
oklch(88.4% 0.051 294)
-
Step 300
300
#C4B6F6
oklch(81% 0.09 294.3)
-
Step 400
400
#A78DF1
oklch(70.8% 0.144 294.4)
-
Step 500
500
#936CEC
oklch(63.1% 0.186 294.5)
-
Step 600
600
#7E50DB
oklch(55.6% 0.202 294.1)
-
Step 700
700
#6B3FBE
oklch(49.1% 0.188 294.3)
-
Step 800
800
#573599
oklch(42.6% 0.155 294.5)
-
Step 900
900
#47307A
oklch(37.7% 0.121 294.2)
-
Step 950
950 (this color)
#231640
oklch(24.3% 0.077 294.2)
#231640 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) | #021E41 | 0.051 |
| Deuteranopia (no green cones) | #051D3F | 0.048 |
| Tritanopia (no blue cones) | #1C1F28 | 0.061 |
| Achromatopsia (no color) | #1E1E1E | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231640
#231640
oklch(24.3% 0.077 294.2)
- #202300
#202300
oklch(24.5% 0.055 114.4)
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 #231640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.047
- Dark Purple #35063E ΔE 0.050
- Midnight Purple #280137 ΔE 0.051
- Oxford Blue #1B263B ΔE 0.053
- Very Dark Purple #2A0134 ΔE 0.054
- Eggplant #380835 ΔE 0.057
- Deep Purple #36013F ΔE 0.057
- Dark #1B2431 ΔE 0.059
Use #231640 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.