#635FB6
Closest named color: Iris (#6258C4). oklch(53.2% 0.133 283), rgb(99, 95, 182).
Aa
White text reads best on this color (5.46:1).
About this color
#635FB6 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 53%, its chroma 0.133 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.030 away. White text reads best on it, at 5.46:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #635FB6 |
| RGB | rgb(99, 95, 182) |
| HSL | hsl(243, 37%, 54%) |
| OKLCH | oklch(53.2% 0.133 283) |
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 #635FB6 | 5.46:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #635FB6 | 3.84:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #635FB6 text on white | 5.46:1 | AA | Lc 77.1 | Fine for body text |
| #635FB6 text on black | 3.84:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#BABCE7
oklch(80.8% 0.06 282.9)
-
Step 400
400
#9899DB
oklch(70.7% 0.096 283)
-
Step 500
500
#807ED1
oklch(63.1% 0.123 283.4)
-
Step 600
600 (this color)
#635FB6
oklch(53.2% 0.133 283)
-
Step 700
700
#5855A4
oklch(49.2% 0.123 282.6)
-
Step 800
800
#484685
oklch(42.8% 0.102 282.6)
-
Step 900
900
#3C3B6A
oklch(37.7% 0.079 282.9)
-
Step 950
950
#23233E
oklch(27% 0.05 282.6)
#635FB6 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) | #3B6CB9 | 0.055 |
| Deuteranopia (no green cones) | #3766B4 | 0.055 |
| Tritanopia (no blue cones) | #487182 | 0.113 |
| Achromatopsia (no color) | #696969 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635FB6
#635FB6
oklch(53.2% 0.133 283)
- #796E00
#796E00
oklch(53.2% 0.112 102.6)
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 #635FB6, closest first.
No curated palette has a color within ΔE 0.04 of #635FB6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.030
- Slate Blue #6A5ACD ΔE 0.040
- Dark Periwinkle #665FD1 ΔE 0.042
- Light Indigo #6D5ACF ΔE 0.045
- French Blue #436BAD ΔE 0.053
- Dusky Blue #475F94 ΔE 0.069
- Deep Lavender #8D5EB7 ΔE 0.069
- Mid Blue #276AB3 ΔE 0.069
Use #635FB6 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.