#17153A
Closest named color: Rich Black (#0D1B2A). oklch(22.3% 0.069 281.6), rgb(23, 21, 58).
Aa
White text reads best on this color (17.43:1).
About this color
#17153A is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.069 and its hue 282°. 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 17.43:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.43:1 |
Values
| HEX | #17153A |
| RGB | rgb(23, 21, 58) |
| HSL | hsl(243, 47%, 15%) |
| OKLCH | oklch(22.3% 0.069 281.6) |
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 #17153A | 17.43:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #17153A | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #17153A text on white | 17.43:1 | AAA | Lc 104.1 | Preferred for body text |
| #17153A text on black | 1.20:1 | 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
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D3D6F7
oklch(88.4% 0.045 281.3)
-
Step 300
300
#B7BBF5
oklch(80.9% 0.082 281.3)
-
Step 400
400
#9495F0
oklch(70.7% 0.132 282)
-
Step 500
500
#7B78EB
oklch(63.1% 0.168 281.6)
-
Step 600
600
#665ED9
oklch(55.6% 0.182 281.6)
-
Step 700
700
#554DBC
oklch(49.1% 0.169 281.5)
-
Step 800
800
#454098
oklch(42.7% 0.139 281.3)
-
Step 900
900
#3A3779
oklch(37.7% 0.109 281.9)
-
Step 950
950 (this color)
#17153A
oklch(22.3% 0.069 281.6)
#17153A 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) | #021B3B | 0.032 |
| Deuteranopia (no green cones) | #001939 | 0.033 |
| Tritanopia (no blue cones) | #091D25 | 0.058 |
| Achromatopsia (no color) | #1A1A1A | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17153A
#17153A
oklch(22.3% 0.069 281.6)
- #201C00
#201C00
oklch(22.4% 0.047 102)
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 #17153A, 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 0.045
- Dark Indigo #1F0954 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.057
- Dark #1B2431 ΔE 0.057
- Midnight Purple #280137 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.062
- Night Blue #040348 ΔE 0.064
Use #17153A 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.