#B4377D
Closest named color: Medium Violet Red (#C71585). oklch(54.1% 0.175 350), rgb(180, 55, 125).
Aa
White text reads best on this color (5.55:1).
About this color
#B4377D is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.175 and its hue 350°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.049 away. White text reads best on it, at 5.55:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #B4377D |
| RGB | rgb(180, 55, 125) |
| HSL | hsl(326, 53%, 46%) |
| OKLCH | oklch(54.1% 0.175 350) |
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 #B4377D | 5.55:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #B4377D | 3.78:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #B4377D text on white | 5.55:1 | AA | Lc 76.7 | Fine for body text |
| #B4377D text on black | 3.78:1 | AA large text | Lc -25.0 | 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
#E9ACC8
oklch(80.9% 0.08 349.8)
-
Step 400
400
#DB7EAB
oklch(70.7% 0.126 350.4)
-
Step 500
500
#CE5A97
oklch(63.1% 0.161 350)
-
Step 600
600 (this color)
#B4377D
oklch(54.1% 0.175 350)
-
Step 700
700
#9F2D6D
oklch(49.1% 0.162 350.2)
-
Step 800
800
#812759
oklch(42.7% 0.134 350)
-
Step 900
900
#682549
oklch(37.6% 0.105 350)
-
Step 950
950
#3D172B
oklch(27% 0.066 349.6)
#B4377D 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) | #4A5A7F | 0.193 |
| Deuteranopia (no green cones) | #6D707A | 0.172 |
| Tritanopia (no blue cones) | #C13055 | 0.065 |
| Achromatopsia (no color) | #686868 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4377D
#B4377D
oklch(54.1% 0.175 350)
- #008365
#008365
oklch(54.2% 0.108 169.5)
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 #B4377D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.049
- Light Burgundy #A8415B ΔE 0.063
- Dark Pink #CB416B ΔE 0.064
- Dark Rose #B5485D ΔE 0.067
- Deep Rose #C74767 ΔE 0.069
- Light Plum #9D5783 ΔE 0.070
- Warm Purple #952E8F ΔE 0.078
- Dark Hot Pink #D90166 ΔE 0.080
Use #B4377D 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.