#4B3759
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.062 310.6), rgb(75, 55, 89).
Aa
White text reads best on this color (10.55:1).
About this color
#4B3759 is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.062 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.063 away. White text reads best on it, at 10.55:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.55:1 |
Values
| HEX | #4B3759 |
| RGB | rgb(75, 55, 89) |
| HSL | hsl(275, 24%, 28%) |
| OKLCH | oklch(37.4% 0.062 310.6) |
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 #4B3759 | 10.55:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #4B3759 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #4B3759 text on white | 10.55:1 | AAA | Lc 94.4 | Preferred for body text |
| #4B3759 text on black | 1.98:1 | Fails | Lc -8.2 | 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 900.
-
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
#DED5E6
oklch(88.5% 0.025 309.3)
-
Step 300
300
#CAB9D7
oklch(80.9% 0.045 310.6)
-
Step 400
400
#AF94C3
oklch(70.7% 0.073 310.5)
-
Step 500
500
#9C79B4
oklch(63.2% 0.095 310.9)
-
Step 600
600
#8661A0
oklch(55.6% 0.103 310.3)
-
Step 700
700
#725089
oklch(49.1% 0.096 310.7)
-
Step 800
800
#5D426F
oklch(42.8% 0.079 310.9)
-
Step 900
900 (this color)
#4B3759
oklch(37.4% 0.062 310.6)
-
Step 950
950
#2C2135
oklch(27% 0.039 309.1)
#4B3759 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) | #313E5A | 0.046 |
| Deuteranopia (no green cones) | #353F58 | 0.043 |
| Tritanopia (no blue cones) | #493C44 | 0.044 |
| Achromatopsia (no color) | #3F3F3F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3759
#4B3759
oklch(37.4% 0.062 310.6)
- #354723
#354723
oklch(37.3% 0.062 130.6)
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 #4B3759, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.063
- Onyx #343A40 ΔE 0.064
- Dark Grey Blue #29465B ΔE 0.065
- Charcoal #264653 ΔE 0.072
- Purple Brown #673A3F ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.074
- Prussian Blue #1D3557 ΔE 0.074
- Gunmetal #293241 ΔE 0.076
Use #4B3759 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.