#B4275A
Closest named color: Raspberry (#B00149). oklch(51.5% 0.179 4.8), rgb(180, 39, 90).
Aa
White text reads best on this color (6.21:1).
About this color
#B4275A is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.179 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.035 away. White text reads best on it, at 6.21:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.37:1 |
| White text | 6.21:1 |
Values
| HEX | #B4275A |
| RGB | rgb(180, 39, 90) |
| HSL | hsl(338, 64%, 43%) |
| OKLCH | oklch(51.5% 0.179 4.8) |
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 #B4275A | 6.21:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #B4275A | 3.37:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #B4275A text on white | 6.21:1 | AA | Lc 79.6 | Fine for body text |
| #B4275A text on black | 3.37:1 | AA large text | Lc -22.2 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F6CDD5
oklch(88.6% 0.047 4.9)
-
Step 300
300
#F1A9B9
oklch(80.8% 0.087 4.6)
-
Step 400
400
#E77995
oklch(70.8% 0.138 5.1)
-
Step 500
500
#DC517B
oklch(63.1% 0.176 5.1)
-
Step 600
600
#C72D64
oklch(55.6% 0.192 5)
-
Step 700
700 (this color)
#B4275A
oklch(51.5% 0.179 4.8)
-
Step 800
800
#8B1C44
oklch(42.6% 0.148 4.9)
-
Step 900
900
#701F39
oklch(37.6% 0.115 5.1)
-
Step 950
950
#421422
oklch(27% 0.073 4.5)
#B4275A 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) | #4B4F5B | 0.201 |
| Deuteranopia (no green cones) | #706B57 | 0.182 |
| Tritanopia (no blue cones) | #C4003D | 0.049 |
| Achromatopsia (no color) | #616161 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4275A
#B4275A
oklch(51.5% 0.179 4.8)
- #00786E
#00786E
oklch(51.5% 0.091 184.8)
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 #B4275A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.035
- Light Burgundy #A8415B ΔE 0.043
- Rose Red #BE013C ΔE 0.045
- Ruby #CA0147 ΔE 0.049
- Rouge #AB1239 ΔE 0.051
- Violet Red #A50055 ΔE 0.051
- Dark Rose #B5485D ΔE 0.055
- Lipstick Red #C0022F ΔE 0.059
Use #B4275A 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.