#57309D
Closest named color: Rebecca Purple (#663399). oklch(42.2% 0.167 294.6), rgb(87, 48, 157).
Aa
White text reads best on this color (9.07:1).
About this color
#57309D is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.167 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 9.07:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #57309D |
| RGB | rgb(87, 48, 157) |
| HSL | hsl(261, 53%, 40%) |
| OKLCH | oklch(42.2% 0.167 294.6) |
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 #57309D | 9.07:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #57309D | 2.31:1 | Fails | Lc 13.7 | Not readable |
| #57309D text on white | 9.07:1 | AAA | Lc 90.3 | Preferred for body text |
| #57309D text on black | 2.31:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE7FB
oklch(93.7% 0.027 295)
-
Step 200
200
#DBD3FA
oklch(88.6% 0.054 294.7)
-
Step 300
300
#C4B4FA
oklch(80.8% 0.099 294.6)
-
Step 400
400
#A88AF7
oklch(70.6% 0.157 294.7)
-
Step 500
500
#9469F3
oklch(63.1% 0.198 294.4)
-
Step 600
600
#804BE2
oklch(55.7% 0.216 294.4)
-
Step 700
700
#6D3AC4
oklch(49.1% 0.202 294.7)
-
Step 800
800 (this color)
#57309D
oklch(42.2% 0.167 294.6)
-
Step 900
900
#482D7E
oklch(37.6% 0.131 294.6)
-
Step 950
950
#2A1C4A
oklch(27.1% 0.082 294.3)
#57309D 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) | #004AA0 | 0.103 |
| Deuteranopia (no green cones) | #00479B | 0.102 |
| Tritanopia (no blue cones) | #444B62 | 0.131 |
| Achromatopsia (no color) | #494949 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57309D
#57309D
oklch(42.2% 0.167 294.6)
- #4D5300
#4D5300
oklch(42.2% 0.095 114.5)
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 #57309D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Blueberry #464196 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.048
- Chrysanthemum #560BAD ΔE 0.052
- Imperial Purple #480CA8 ΔE 0.062
- Blue With A Hint Of Purple #533CC6 ΔE 0.071
- Grape #7209B7 ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.077
Use #57309D 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.