#603D72
Closest named color: Dark Slate Blue (#483D8B). oklch(42.3% 0.094 313.4), rgb(96, 61, 114).
Aa
White text reads best on this color (8.72:1).
About this color
#603D72 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.094 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.060 away. White text reads best on it, at 8.72:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #603D72 |
| RGB | rgb(96, 61, 114) |
| HSL | hsl(280, 30%, 34%) |
| OKLCH | oklch(42.3% 0.094 313.4) |
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 #603D72 | 8.72:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #603D72 | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #603D72 text on white | 8.72:1 | AAA | Lc 89.7 | Fine for body text |
| #603D72 text on black | 2.40:1 | Fails | Lc -12.5 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F2
oklch(93.7% 0.016 313.6)
-
Step 200
200
#E0D4E8
oklch(88.6% 0.03 312.1)
-
Step 300
300
#CDB7DA
oklch(80.9% 0.054 313)
-
Step 400
400
#B491C8
oklch(70.8% 0.087 313)
-
Step 500
500
#A174B9
oklch(63% 0.112 313.3)
-
Step 600
600
#8C5CA5
oklch(55.6% 0.121 313.3)
-
Step 700
700
#774B8E
oklch(49.1% 0.114 313.1)
-
Step 800
800 (this color)
#603D72
oklch(42.3% 0.094 313.4)
-
Step 900
900
#4F355D
oklch(37.6% 0.073 313.1)
-
Step 950
950
#2E1F36
oklch(26.8% 0.046 313.3)
#603D72 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) | #324974 | 0.077 |
| Deuteranopia (no green cones) | #3C4C71 | 0.069 |
| Tritanopia (no blue cones) | #5F4552 | 0.064 |
| Achromatopsia (no color) | #4B4B4B | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603D72
#603D72
oklch(42.3% 0.094 313.4)
- #38591E
#38591E
oklch(42.4% 0.095 133.6)
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 #603D72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.060
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.072
- Dusty Grape #545775 ΔE 0.073
- Blueberry #464196 ΔE 0.074
- Brownish Purple #76424E ΔE 0.079
- Purple Brown #673A3F ΔE 0.085
Use #603D72 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.