#6437B5
Closest named color: Bluey Purple (#6241C7). oklch(46.5% 0.187 294.3), rgb(100, 55, 181).
Aa
White text reads best on this color (7.62:1).
About this color
#6437B5 is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.187 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.035 away. White text reads best on it, at 7.62:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.187) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #6437B5 |
| RGB | rgb(100, 55, 181) |
| HSL | hsl(261, 53%, 46%) |
| OKLCH | oklch(46.5% 0.187 294.3) |
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 #6437B5 | 7.62:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #6437B5 | 2.75:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #6437B5 text on white | 7.62:1 | AAA | Lc 85.8 | Fine for body text |
| #6437B5 text on black | 2.75:1 | Fails | Lc -16.2 | 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 700.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#DAD3F8
oklch(88.4% 0.051 294)
-
Step 300
300
#C4B6F6
oklch(81% 0.09 294.3)
-
Step 400
400
#A78DF1
oklch(70.8% 0.144 294.4)
-
Step 500
500
#936CEC
oklch(63.1% 0.186 294.5)
-
Step 600
600
#7E50DA
oklch(55.5% 0.201 294.2)
-
Step 700
700 (this color)
#6437B5
oklch(46.5% 0.187 294.3)
-
Step 800
800
#573599
oklch(42.6% 0.155 294.5)
-
Step 900
900
#47307A
oklch(37.7% 0.121 294.2)
-
Step 950
950
#291D47
oklch(26.9% 0.076 293.9)
#6437B5 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) | #0055B9 | 0.114 |
| Deuteranopia (no green cones) | #0051B2 | 0.113 |
| Tritanopia (no blue cones) | #4D5672 | 0.146 |
| Achromatopsia (no color) | #545454 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6437B5
#6437B5
oklch(46.5% 0.187 294.3)
- #595F00
#595F00
oklch(46.4% 0.104 114)
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 #6437B5, closest first.
No curated palette has a color within ΔE 0.04 of #6437B5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.035
- Blue With A Hint Of Purple #533CC6 ΔE 0.042
- Rebecca Purple #663399 ΔE 0.046
- Blurple #5539CC ΔE 0.046
- Purple Blue #5D21D0 ΔE 0.055
- Grape #7209B7 ΔE 0.057
- Chrysanthemum #560BAD ΔE 0.069
- Majorelle Blue #3F37C9 ΔE 0.072
Use #6437B5 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.