#6337AC
Closest named color: Rebecca Purple (#663399). oklch(45.7% 0.177 295.9), rgb(99, 55, 172).
Aa
White text reads best on this color (7.85:1).
About this color
#6337AC is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.177 and its hue 296°. 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 7.85:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #6337AC |
| RGB | rgb(99, 55, 172) |
| HSL | hsl(263, 52%, 45%) |
| OKLCH | oklch(45.7% 0.177 295.9) |
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 #6337AC | 7.85:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #6337AC | 2.67:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #6337AC text on white | 7.85:1 | AAA | Lc 86.7 | Fine for body text |
| #6337AC text on black | 2.67:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#EBE6FC
oklch(93.5% 0.03 296.2)
-
Step 200
200
#DCD2FC
oklch(88.5% 0.058 296.1)
-
Step 300
300
#C6B3FC
oklch(80.9% 0.103 296)
-
Step 400
400
#AB88FB
oklch(70.8% 0.165 295.9)
-
Step 500
500
#9864F8
oklch(63.1% 0.212 296)
-
Step 600
600
#8445E7
oklch(55.7% 0.229 295.8)
-
Step 700
700
#7034C9
oklch(49.1% 0.214 295.8)
-
Step 800
800 (this color)
#6337AC
oklch(45.7% 0.177 295.9)
-
Step 900
900
#4A2B81
oklch(37.8% 0.138 295.6)
-
Step 950
950
#2B1A4B
oklch(26.9% 0.087 296)
#6337AC 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) | #0052B0 | 0.113 |
| Deuteranopia (no green cones) | #0050AA | 0.113 |
| Tritanopia (no blue cones) | #50536D | 0.137 |
| Achromatopsia (no color) | #525252 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6337AC
#6337AC
oklch(45.7% 0.177 295.9)
- #555E00
#555E00
oklch(45.8% 0.105 116.1)
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 #6337AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Bluey Purple #6241C7 ΔE 0.047
- Blue With A Hint Of Purple #533CC6 ΔE 0.052
- Blurple #5539CC ΔE 0.058
- Grape #7209B7 ΔE 0.060
- Blueberry #464196 ΔE 0.063
- Purple Blue #5D21D0 ΔE 0.066
- Chrysanthemum #560BAD ΔE 0.067
Use #6337AC 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.