#603387
Closest named color: Rebecca Purple (#663399). oklch(42% 0.138 306), rgb(96, 51, 135).
Aa
White text reads best on this color (9.04:1).
About this color
#603387 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.138 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.031 away. White text reads best on it, at 9.04:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #603387 |
| RGB | rgb(96, 51, 135) |
| HSL | hsl(272, 45%, 36%) |
| OKLCH | oklch(42% 0.138 306) |
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 #603387 | 9.04:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #603387 | 2.32:1 | Fails | Lc 13.6 | Not readable |
| #603387 text on white | 9.04:1 | AAA | Lc 90.4 | Preferred for body text |
| #603387 text on black | 2.32:1 | Fails | Lc -11.9 | Not readable |
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 800.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F7
oklch(93.6% 0.024 307)
-
Step 200
200
#E0D2F1
oklch(88.5% 0.045 305.9)
-
Step 300
300
#CDB4EA
oklch(80.9% 0.079 305.7)
-
Step 400
400
#B48AE0
oklch(70.6% 0.129 305.8)
-
Step 500
500
#A26BD7
oklch(63.1% 0.164 305.7)
-
Step 600
600
#8E4FC4
oklch(55.6% 0.179 306.2)
-
Step 700
700
#793FA9
oklch(49.1% 0.166 306.4)
-
Step 800
800 (this color)
#603387
oklch(42% 0.138 306)
-
Step 900
900
#502F6E
oklch(37.7% 0.108 306.1)
-
Step 950
950
#2F1C40
oklch(27% 0.068 306.8)
#603387 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) | #0A478A | 0.115 |
| Deuteranopia (no green cones) | #224985 | 0.103 |
| Tritanopia (no blue cones) | #594458 | 0.099 |
| Achromatopsia (no color) | #494949 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603387
#603387
oklch(42% 0.138 306)
- #3E5700
#3E5700
oklch(42.1% 0.108 126.4)
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 #603387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.031
- Dark Slate Blue #483D8B ΔE 0.048
- Blueberry #464196 ΔE 0.058
- Twilight #4E518B ΔE 0.078
- Purple #800080 ΔE 0.084
- Chrysanthemum #560BAD ΔE 0.087
- Dusk #4E5481 ΔE 0.091
- Indigo #4B0082 ΔE 0.092
Use #603387 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.