#B4377B
Closest named color: Medium Violet Red (#C71585). oklch(54.1% 0.174 351), rgb(180, 55, 123).
Aa
White text reads best on this color (5.56:1).
About this color
#B4377B is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.174 and its hue 351°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.050 away. White text reads best on it, at 5.56:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #B4377B |
| RGB | rgb(180, 55, 123) |
| HSL | hsl(327, 53%, 46%) |
| OKLCH | oklch(54.1% 0.174 351) |
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 #B4377B | 5.56:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #B4377B | 3.77:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #B4377B text on white | 5.56:1 | AA | Lc 76.8 | Fine for body text |
| #B4377B text on black | 3.77:1 | AA large text | Lc -24.9 | 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 600.
-
Step 50
50
#FBF3F6
oklch(97.1% 0.009 352.4)
-
Step 100
100
#F7E4EC
oklch(93.6% 0.023 350.1)
-
Step 200
200
#F1CEDD
oklch(88.5% 0.044 350.3)
-
Step 300
300
#E9ACC7
oklch(80.9% 0.079 350.8)
-
Step 400
400
#DB7EAA
oklch(70.7% 0.126 351)
-
Step 500
500
#CE5A95
oklch(63% 0.16 351)
-
Step 600
600 (this color)
#B4377B
oklch(54.1% 0.174 351)
-
Step 700
700
#9F2D6C
oklch(49.1% 0.162 350.8)
-
Step 800
800
#812758
oklch(42.6% 0.134 350.7)
-
Step 900
900
#682648
oklch(37.7% 0.103 351.1)
-
Step 950
950
#3D172A
oklch(26.9% 0.065 351.1)
#B4377B 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) | #4A5A7D | 0.193 |
| Deuteranopia (no green cones) | #6E7078 | 0.171 |
| Tritanopia (no blue cones) | #C13054 | 0.064 |
| Achromatopsia (no color) | #686868 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4377B
#B4377B
oklch(54.1% 0.174 351)
- #008266
#008266
oklch(54% 0.106 170.8)
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 #B4377B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.050
- Light Burgundy #A8415B ΔE 0.060
- Dark Pink #CB416B ΔE 0.062
- Dark Rose #B5485D ΔE 0.065
- Deep Rose #C74767 ΔE 0.067
- Light Plum #9D5783 ΔE 0.070
- Light Maroon #A24857 ΔE 0.077
- Dark Hot Pink #D90166 ΔE 0.078
Use #B4377B 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.