#604D8B
Closest named color: Twilight (#4E518B). oklch(46.8% 0.099 296.5), rgb(96, 77, 139).
Aa
White text reads best on this color (7.16:1).
About this color
#604D8B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.099 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.030 away. White text reads best on it, at 7.16:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #604D8B |
| RGB | rgb(96, 77, 139) |
| HSL | hsl(258, 29%, 42%) |
| OKLCH | oklch(46.8% 0.099 296.5) |
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 #604D8B | 7.16:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #604D8B | 2.93:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #604D8B text on white | 7.16:1 | AAA | Lc 84.7 | Fine for body text |
| #604D8B text on black | 2.93:1 | Fails | Lc -17.3 | 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 700.
-
Step 50
50
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E9
oklch(88.5% 0.026 295.5)
-
Step 300
300
#C3BBDD
oklch(81% 0.048 296.1)
-
Step 400
400
#A597CB
oklch(70.7% 0.076 296.8)
-
Step 500
500
#8F7DBE
oklch(63.2% 0.098 296.2)
-
Step 600
600
#7A65AA
oklch(55.6% 0.107 296.8)
-
Step 700
700 (this color)
#604D8B
oklch(46.8% 0.099 296.5)
-
Step 800
800
#544577
oklch(42.8% 0.082 296.6)
-
Step 900
900
#453A60
oklch(37.7% 0.065 296.5)
-
Step 950
950
#282238
oklch(26.9% 0.041 296.1)
#604D8B 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) | #3B588D | 0.058 |
| Deuteranopia (no green cones) | #3E5789 | 0.055 |
| Tritanopia (no blue cones) | #575865 | 0.079 |
| Achromatopsia (no color) | #585858 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604D8B
#604D8B
oklch(46.8% 0.099 296.5)
- #576111
#576111
oklch(46.8% 0.1 116.8)
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 #604D8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.030
- Dusk #4E5481 ΔE 0.039
- Dusty Grape #545775 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Rebecca Purple #663399 ΔE 0.068
Use #604D8B 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.