#B10057
Closest named color: Raspberry (#B00149). oklch(49.1% 0.198 2.4), rgb(177, 0, 87).
Aa
White text reads best on this color (6.98:1).
About this color
#B10057 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.198 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Raspberry (#B00149), ΔE 0.022 away. White text reads best on it, at 6.98:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Raspberry (#B00149) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #B10057 |
| RGB | rgb(177, 0, 87) |
| HSL | hsl(331, 100%, 35%) |
| OKLCH | oklch(49.1% 0.198 2.4) |
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 #B10057 | 6.98:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #B10057 | 3.00:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #B10057 text on white | 6.98:1 | AA | Lc 81.7 | Fine for body text |
| #B10057 text on black | 3.00:1 | AA large text | Lc -20.2 | 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
#FEF2F5
oklch(97.1% 0.013 0.3)
-
Step 100
100
#FBE3E8
oklch(93.7% 0.027 3.4)
-
Step 200
200
#F9CBD6
oklch(88.5% 0.054 2.2)
-
Step 300
300
#F5A7BB
oklch(80.9% 0.095 2.6)
-
Step 400
400
#EC7398
oklch(70.6% 0.153 2.5)
-
Step 500
500
#E2477F
oklch(63.1% 0.195 2.5)
-
Step 600
600
#CD1969
oklch(55.6% 0.213 2.2)
-
Step 700
700 (this color)
#B10057
oklch(49.1% 0.198 2.4)
-
Step 800
800
#900D47
oklch(42.7% 0.164 2.6)
-
Step 900
900
#74183C
oklch(37.7% 0.128 2.2)
-
Step 950
950
#441123
oklch(27% 0.08 2.5)
#B10057 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) | #3E4558 | 0.226 |
| Deuteranopia (no green cones) | #686453 | 0.202 |
| Tritanopia (no blue cones) | #C10031 | 0.066 |
| Achromatopsia (no color) | #595959 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B10057
#B10057
oklch(49.1% 0.198 2.4)
- #007065
#007065
oklch(49% 0.087 183.1)
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 #B10057, closest first.
No curated palette has a color within ΔE 0.04 of #B10057.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raspberry #B00149 ΔE 0.022
- Violet Red #A50055 ΔE 0.026
- Deep Magenta #A0025C ΔE 0.039
- Dark Fuchsia #9D0759 ΔE 0.043
- Rouge #AB1239 ΔE 0.048
- Rose Red #BE013C ΔE 0.051
- Berry #990F4B ΔE 0.052
- Red Violet #9E0168 ΔE 0.053
Use #B10057 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.