#635FB4
Closest named color: Iris (#6258C4). oklch(53% 0.13 283.1), rgb(99, 95, 180).
Aa
White text reads best on this color (5.48:1).
About this color
#635FB4 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 53%, its chroma 0.130 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.033 away. White text reads best on it, at 5.48:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #635FB4 |
| RGB | rgb(99, 95, 180) |
| HSL | hsl(243, 36%, 54%) |
| OKLCH | oklch(53% 0.13 283.1) |
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 #635FB4 | 5.48:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #635FB4 | 3.82:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #635FB4 text on white | 5.48:1 | AA | Lc 77.2 | Fine for body text |
| #635FB4 text on black | 3.82:1 | AA large text | Lc -24.5 | 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
#D6D7EF
oklch(88.6% 0.033 283.8)
-
Step 300
300
#BBBCE6
oklch(80.8% 0.059 283.9)
-
Step 400
400
#9899DA
oklch(70.7% 0.094 283)
-
Step 500
500
#807FCF
oklch(63.1% 0.119 283)
-
Step 600
600 (this color)
#635FB4
oklch(53% 0.13 283.1)
-
Step 700
700
#5955A2
oklch(49.1% 0.12 283.4)
-
Step 800
800
#484684
oklch(42.7% 0.101 282.7)
-
Step 900
900
#3C3B6A
oklch(37.7% 0.079 282.9)
-
Step 950
950
#23233E
oklch(27% 0.05 282.6)
#635FB4 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) | #3D6CB7 | 0.054 |
| Deuteranopia (no green cones) | #3966B2 | 0.053 |
| Tritanopia (no blue cones) | #497181 | 0.112 |
| Achromatopsia (no color) | #696969 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #635FB4
#635FB4
oklch(53% 0.13 283.1)
- #786E00
#786E00
oklch(53.1% 0.112 103.2)
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 #635FB4, closest first.
No curated palette has a color within ΔE 0.04 of #635FB4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.047
- French Blue #436BAD ΔE 0.052
- Dusky Blue #475F94 ΔE 0.066
- Mid Blue #276AB3 ΔE 0.068
- Deep Lavender #8D5EB7 ΔE 0.069
Use #635FB4 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.