#55237F
Closest named color: Indigo (#4B0082). oklch(37.8% 0.148 305.1), rgb(85, 35, 127).
Aa
White text reads best on this color (10.86:1).
About this color
#55237F is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.148 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.051 away. White text reads best on it, at 10.86:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #55237F |
| RGB | rgb(85, 35, 127) |
| HSL | hsl(273, 57%, 32%) |
| OKLCH | oklch(37.8% 0.148 305.1) |
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 #55237F | 10.86:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #55237F | 1.93:1 | Fails | Lc 9.4 | Not readable |
| #55237F text on white | 10.86:1 | AAA | Lc 94.5 | Preferred for body text |
| #55237F text on black | 1.93:1 | Fails | Lc -8.1 | 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 900.
-
Step 50
50
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EFE5FC
oklch(93.7% 0.032 305.3)
-
Step 200
200
#E2CFFB
oklch(88.4% 0.063 304.7)
-
Step 300
300
#D1AEFA
oklch(80.8% 0.111 305.1)
-
Step 400
400
#BB7FF8
oklch(70.7% 0.178 305.2)
-
Step 500
500
#AB57F4
oklch(63.1% 0.228 305.4)
-
Step 600
600
#9732E3
oklch(55.6% 0.248 305.3)
-
Step 700
700
#8121C5
oklch(49.1% 0.23 305.3)
-
Step 800
800
#6920A0
oklch(42.8% 0.191 305.2)
-
Step 900
900 (this color)
#55237F
oklch(37.8% 0.148 305.1)
-
Step 950
950
#32164A
oklch(27% 0.094 305.8)
#55237F 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) | #003C82 | 0.115 |
| Deuteranopia (no green cones) | #003D7D | 0.117 |
| Tritanopia (no blue cones) | #4D384E | 0.106 |
| Achromatopsia (no color) | #3D3D3D | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55237F
#55237F
oklch(37.8% 0.148 305.1)
- #364A00
#364A00
oklch(37.8% 0.095 125.3)
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 #55237F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.051
- Royal Purple #4B006E ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Rebecca Purple #663399 ΔE 0.064
- Blueberry #464196 ΔE 0.078
- Chrysanthemum #560BAD ΔE 0.079
- Imperial Purple #480CA8 ΔE 0.080
- Grape Purple #5D1451 ΔE 0.084
Use #55237F 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.