#B1307A
Closest named color: Medium Violet Red (#C71585). oklch(52.9% 0.179 349.8), rgb(177, 48, 122).
Aa
White text reads best on this color (5.87:1).
About this color
#B1307A is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.179 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 5.87:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #B1307A |
| RGB | rgb(177, 48, 122) |
| HSL | hsl(326, 57%, 44%) |
| OKLCH | oklch(52.9% 0.179 349.8) |
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 #B1307A | 5.87:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #B1307A | 3.57:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #B1307A text on white | 5.87:1 | AA | Lc 78.3 | Fine for body text |
| #B1307A text on black | 3.57:1 | AA large text | Lc -23.5 | 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
#FCF3F6
oklch(97.2% 0.01 354.9)
-
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
#DC7DAC
oklch(70.7% 0.13 349.9)
-
Step 500
500
#CF5898
oklch(63% 0.166 349.5)
-
Step 600
600 (this color)
#B1307A
oklch(52.9% 0.179 349.8)
-
Step 700
700
#A02A6E
oklch(49% 0.167 349.7)
-
Step 800
800
#82255A
oklch(42.7% 0.138 349.5)
-
Step 900
900
#69244A
oklch(37.7% 0.108 349.4)
-
Step 950
950
#3E162B
oklch(27% 0.069 350)
#B1307A 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) | #44567C | 0.200 |
| Deuteranopia (no green cones) | #696D77 | 0.178 |
| Tritanopia (no blue cones) | #BE2951 | 0.068 |
| Achromatopsia (no color) | #646464 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1307A
#B1307A
oklch(52.9% 0.179 349.8)
- #007E62
#007E62
oklch(52.8% 0.104 170.2)
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 #B1307A, 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 0.065
- Red Violet #9E0168 ΔE 0.068
- Warm Purple #952E8F ΔE 0.070
- Violet Red #A50055 ΔE 0.071
- Deep Magenta #A0025C ΔE 0.071
- Dark Pink #CB416B ΔE 0.074
- Dark Rose #B5485D ΔE 0.074
Use #B1307A 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.