#B70033
Closest named color: Rose Red (#BE013C). oklch(49.4% 0.198 18.2), rgb(183, 0, 51).
Aa
White text reads best on this color (6.85:1).
About this color
#B70033 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.198 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Rose Red (#BE013C), ΔE 0.018 away. White text reads best on it, at 6.85:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Rose Red (#BE013C) |
| Black text | 3.06:1 |
| White text | 6.85:1 |
Values
| HEX | #B70033 |
| RGB | rgb(183, 0, 51) |
| HSL | hsl(343, 100%, 36%) |
| OKLCH | oklch(49.4% 0.198 18.2) |
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 #B70033 | 6.85:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #B70033 | 3.06:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #B70033 text on white | 6.85:1 | AA | Lc 81.1 | Fine for body text |
| #B70033 text on black | 3.06:1 | AA large text | Lc -20.8 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FBCCCC
oklch(88.6% 0.053 18.2)
-
Step 300
300
#F8A8A9
oklch(80.9% 0.095 18.5)
-
Step 400
400
#F1747B
oklch(70.7% 0.154 18.4)
-
Step 500
500
#E7475A
oklch(63% 0.196 18.2)
-
Step 600
600
#D31740
oklch(55.6% 0.213 18.3)
-
Step 700
700 (this color)
#B70033
oklch(49.4% 0.198 18.2)
-
Step 800
800
#940C2A
oklch(42.7% 0.164 18.3)
-
Step 900
900
#771826
oklch(37.7% 0.128 18.3)
-
Step 950
950
#461117
oklch(27% 0.081 18)
#B70033 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) | #484433 | 0.222 |
| Deuteranopia (no green cones) | #71662D | 0.201 |
| Tritanopia (no blue cones) | #CA001D | 0.047 |
| Achromatopsia (no color) | #5A5A5A | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B70033
#B70033
oklch(49.4% 0.198 18.2)
- #007073
#007073
oklch(49.5% 0.084 198)
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 #B70033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rose Red #BE013C ΔE 0.018
- Lipstick Red #C0022F ΔE 0.020
- Rouge #AB1239 ΔE 0.025
- Scarlet #BE0119 ΔE 0.030
- Firebrick #B22222 ΔE 0.034
- Raspberry #B00149 ΔE 0.035
- Rufous #AE2012 ΔE 0.044
- Ruby #CA0147 ΔE 0.046
Use #B70033 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.