#603F72
Closest named color: Dark Slate Blue (#483D8B). oklch(42.7% 0.09 312.8), rgb(96, 63, 114).
Aa
White text reads best on this color (8.56:1).
About this color
#603F72 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.090 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 0.062 away. White text reads best on it, at 8.56:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.45:1 |
| White text | 8.56:1 |
Values
| HEX | #603F72 |
| RGB | rgb(96, 63, 114) |
| HSL | hsl(279, 29%, 35%) |
| OKLCH | oklch(42.7% 0.09 312.8) |
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 #603F72 | 8.56:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #603F72 | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #603F72 text on white | 8.56:1 | AAA | Lc 89.3 | Fine for body text |
| #603F72 text on black | 2.45:1 | Fails | Lc -12.9 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#E0D4E7
oklch(88.5% 0.029 313.3)
-
Step 300
300
#CDB7D9
oklch(80.9% 0.053 313.7)
-
Step 400
400
#B391C6
oklch(70.6% 0.084 313.2)
-
Step 500
500
#A075B8
oklch(63% 0.109 312.9)
-
Step 600
600
#8B5DA4
oklch(55.6% 0.118 312.9)
-
Step 700
700
#764C8C
oklch(49% 0.109 313.2)
-
Step 800
800 (this color)
#603F72
oklch(42.7% 0.09 312.8)
-
Step 900
900
#4E365C
oklch(37.7% 0.07 312.3)
-
Step 950
950
#2E2036
oklch(27.1% 0.044 312.7)
#603F72 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) | #354A74 | 0.072 |
| Deuteranopia (no green cones) | #3D4D71 | 0.067 |
| Tritanopia (no blue cones) | #5E4653 | 0.061 |
| Achromatopsia (no color) | #4C4C4C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603F72
#603F72
oklch(42.7% 0.09 312.8)
- #3B5921
#3B5921
oklch(42.7% 0.09 132.7)
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 #603F72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Twilight #4E518B ΔE 0.062
- Dusk #4E5481 ΔE 0.062
- Dusty Grape #545775 ΔE 0.068
- Rebecca Purple #663399 ΔE 0.074
- Blueberry #464196 ΔE 0.074
- Brownish Purple #76424E ΔE 0.076
- Purple Brown #673A3F ΔE 0.084
Use #603F72 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.