#6351B0
Closest named color: Iris (#6258C4). oklch(50.2% 0.145 288.8), rgb(99, 81, 176).
Aa
White text reads best on this color (6.29:1).
About this color
#6351B0 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.145 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.034 away. White text reads best on it, at 6.29:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #6351B0 |
| RGB | rgb(99, 81, 176) |
| HSL | hsl(251, 38%, 50%) |
| OKLCH | oklch(50.2% 0.145 288.8) |
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 #6351B0 | 6.29:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #6351B0 | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #6351B0 text on white | 6.29:1 | AA | Lc 81.1 | Fine for body text |
| #6351B0 text on black | 3.33:1 | AA large text | Lc -20.8 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BEBAEC
oklch(80.9% 0.07 288.4)
-
Step 400
400
#9E95E2
oklch(70.8% 0.111 288.6)
-
Step 500
500
#8878DA
oklch(63.1% 0.144 289.1)
-
Step 600
600
#725FC8
oklch(55.6% 0.157 288.5)
-
Step 700
700 (this color)
#6351B0
oklch(50.2% 0.145 288.8)
-
Step 800
800
#4E408C
oklch(42.6% 0.121 288.6)
-
Step 900
900
#413770
oklch(37.7% 0.095 289.1)
-
Step 950
950
#262141
oklch(27.1% 0.058 289.1)
#6351B0 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) | #2362B3 | 0.080 |
| Deuteranopia (no green cones) | #245EAE | 0.078 |
| Tritanopia (no blue cones) | #4C6578 | 0.121 |
| Achromatopsia (no color) | #606060 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6351B0
#6351B0
oklch(50.2% 0.145 288.8)
- #696800
#696800
oklch(50.2% 0.109 109.1)
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 #6351B0, closest first.
No curated palette has a color within ΔE 0.04 of #6351B0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.034
- Slate Blue #6A5ACD ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Twilight #4E518B ΔE 0.069
- Dusky Blue #475F94 ΔE 0.074
Use #6351B0 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.