#171236
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.068 285.4), rgb(23, 18, 54).
Aa
White text reads best on this color (17.85:1).
About this color
#171236 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.068 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.043 away. White text reads best on it, at 17.85:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.85:1 |
Values
| HEX | #171236 |
| RGB | rgb(23, 18, 54) |
| HSL | hsl(248, 50%, 14%) |
| OKLCH | oklch(21.2% 0.068 285.4) |
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 #171236 | 17.85:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #171236 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #171236 text on white | 17.85:1 | AAA | Lc 104.5 | Preferred for body text |
| #171236 text on black | 1.17:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D6D6F6
oklch(88.6% 0.044 285.5)
-
Step 300
300
#BBBAF3
oklch(81% 0.08 285.3)
-
Step 400
400
#9994ED
oklch(70.7% 0.128 285.2)
-
Step 500
500
#8277E7
oklch(63.2% 0.164 285.2)
-
Step 600
600
#6D5CD5
oklch(55.5% 0.179 285.4)
-
Step 700
700
#5C4BB9
oklch(49.1% 0.166 285.6)
-
Step 800
800
#4B3E95
oklch(42.6% 0.137 285.8)
-
Step 900
900
#3E3677
oklch(37.7% 0.107 285.7)
-
Step 950
950 (this color)
#171236
oklch(21.2% 0.068 285.4)
#171236 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) | #001837 | 0.036 |
| Deuteranopia (no green cones) | #001635 | 0.036 |
| Tritanopia (no blue cones) | #0C1A21 | 0.057 |
| Achromatopsia (no color) | #171717 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171236
#171236
oklch(21.2% 0.068 285.4)
- #1C1A00
#1C1A00
oklch(21.3% 0.045 105.8)
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 #171236, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.043
- Navy Blue #001146 ΔE 0.048
- Midnight Purple #280137 ΔE 0.053
- Very Dark Purple #2A0134 ΔE 0.056
- Dark Indigo #1F0954 ΔE 0.060
- Night Blue #040348 ΔE 0.063
- Dark #1B2431 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.066
Use #171236 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.