#904CB1
Closest named color: Purply (#983FB2). oklch(54.2% 0.163 313.3), rgb(144, 76, 177).
Aa
White text reads best on this color (5.44:1).
About this color
#904CB1 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.163 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purply (#983FB2), ΔE 0.028 away. White text reads best on it, at 5.44:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Purply (#983FB2) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #904CB1 |
| RGB | rgb(144, 76, 177) |
| HSL | hsl(280, 40%, 50%) |
| OKLCH | oklch(54.2% 0.163 313.3) |
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 #904CB1 | 5.44:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #904CB1 | 3.85:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #904CB1 text on white | 5.44:1 | AA | Lc 76.7 | Fine for body text |
| #904CB1 text on black | 3.85:1 | AA large text | Lc -25.0 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E3D2ED
oklch(88.6% 0.041 313.2)
-
Step 300
300
#D2B3E3
oklch(80.9% 0.074 313.5)
-
Step 400
400
#BA8AD4
oklch(70.6% 0.117 313.2)
-
Step 500
500
#A96BC9
oklch(63.1% 0.15 313.2)
-
Step 600
600 (this color)
#904CB1
oklch(54.2% 0.163 313.3)
-
Step 700
700
#7E409C
oklch(49% 0.152 313.3)
-
Step 800
800
#67367F
oklch(42.8% 0.126 313.3)
-
Step 900
900
#542F66
oklch(37.7% 0.099 313.6)
-
Step 950
950
#311C3C
oklch(27% 0.063 313.1)
#904CB1 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) | #2F66B4 | 0.145 |
| Deuteranopia (no green cones) | #486BAE | 0.128 |
| Tritanopia (no blue cones) | #8D5D77 | 0.110 |
| Achromatopsia (no color) | #6A6A6A | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #904CB1
#904CB1
oklch(54.2% 0.163 313.3)
- #488100
#488100
oklch(54.2% 0.154 133.4)
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 #904CB1, closest first.
No curated palette has a color within ΔE 0.04 of #904CB1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purply #983FB2 ΔE 0.028
- Deep Lavender #8D5EB7 ΔE 0.040
- Amethyst #9B5FC0 ΔE 0.051
- Dark Orchid #9932CC ΔE 0.064
- Light Eggplant #894585 ΔE 0.070
- Warm Purple #952E8F ΔE 0.072
- Light Indigo #6D5ACF ΔE 0.079
- Slate Blue #6A5ACD ΔE 0.081
Use #904CB1 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.