#B7243F
Closest named color: Rose Red (#BE013C). oklch(51.2% 0.181 17.1), rgb(183, 36, 63).
Aa
White text reads best on this color (6.29:1).
About this color
#B7243F is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.181 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Rose Red (#BE013C), ΔE 0.023 away. White text reads best on it, at 6.29:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Rose Red (#BE013C) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #B7243F |
| RGB | rgb(183, 36, 63) |
| HSL | hsl(349, 67%, 43%) |
| OKLCH | oklch(51.2% 0.181 17.1) |
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 #B7243F | 6.29:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #B7243F | 3.33:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #B7243F text on white | 6.29:1 | AA | Lc 79.8 | Fine for body text |
| #B7243F text on black | 3.33:1 | AA large text | Lc -22.1 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FBE4E4
oklch(93.7% 0.025 17.6)
-
Step 200
200
#F8CDCE
oklch(88.6% 0.049 16.5)
-
Step 300
300
#F4AAAC
oklch(80.9% 0.087 17.4)
-
Step 400
400
#EB7981
oklch(70.8% 0.141 16.9)
-
Step 500
500
#E05061
oklch(63% 0.179 17)
-
Step 600
600
#CC2B48
oklch(55.6% 0.195 17.1)
-
Step 700
700 (this color)
#B7243F
oklch(51.2% 0.181 17.1)
-
Step 800
800
#8F1B30
oklch(42.8% 0.15 17)
-
Step 900
900
#731F2A
oklch(37.8% 0.117 17.4)
-
Step 950
950
#441419
oklch(27.1% 0.074 17.4)
#B7243F 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) | #504C3F | 0.201 |
| Deuteranopia (no green cones) | #756B3B | 0.183 |
| Tritanopia (no blue cones) | #C90030 | 0.038 |
| Achromatopsia (no color) | #606060 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B7243F
#B7243F
oklch(51.2% 0.181 17.1)
- #007678
#007678
oklch(51.3% 0.087 196.9)
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 #B7243F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rose Red #BE013C ΔE 0.023
- Lipstick Red #C0022F ΔE 0.026
- Firebrick #B22222 ΔE 0.034
- Rouge #AB1239 ΔE 0.034
- Scarlet #BE0119 ΔE 0.039
- Raspberry #B00149 ΔE 0.041
- Ruby #CA0147 ΔE 0.041
- Dull Red #BB3F3F ΔE 0.044
Use #B7243F 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.