#23172B
Closest named color: Rich Black (#0D1B2A). oklch(23% 0.041 311), rgb(35, 23, 43).
Aa
White text reads best on this color (17.08:1).
About this color
#23172B is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.041 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 17.08:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.08:1 |
Values
| HEX | #23172B |
| RGB | rgb(35, 23, 43) |
| HSL | hsl(276, 30%, 13%) |
| OKLCH | oklch(23% 0.041 311) |
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 #23172B | 17.08:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #23172B | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #23172B text on white | 17.08:1 | AAA | Lc 103.9 | Preferred for body text |
| #23172B text on black | 1.22:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E7
oklch(88.4% 0.028 311.3)
-
Step 300
300
#CBB8D8
oklch(80.9% 0.049 311.7)
-
Step 400
400
#B093C5
oklch(70.7% 0.078 310.7)
-
Step 500
500
#9D78B6
oklch(63.2% 0.099 311)
-
Step 600
600
#8860A2
oklch(55.7% 0.108 311.1)
-
Step 700
700
#734F8A
oklch(49.1% 0.1 311.2)
-
Step 800
800
#5E4170
oklch(42.7% 0.083 311.6)
-
Step 900
900
#4D375B
oklch(37.7% 0.066 311.5)
-
Step 950
950 (this color)
#23172B
oklch(23% 0.041 311)
#23172B 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) | #131B2C | 0.031 |
| Deuteranopia (no green cones) | #161C2A | 0.029 |
| Tritanopia (no blue cones) | #221A1F | 0.029 |
| Achromatopsia (no color) | #1C1C1C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23172B
#23172B
oklch(23% 0.041 311)
- #16210B
#16210B
oklch(23.1% 0.042 130.9)
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 #23172B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Dark #1B2431 ΔE 0.044
- Jet #212529 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.052
- Eggplant #380835 ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.061
- Midnight Purple #280137 ΔE 0.063
- Dark Purple #35063E ΔE 0.066
Use #23172B 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.