#B33A47
Closest named color: Dull Red (#BB3F3F). oklch(52.7% 0.156 18.2), rgb(179, 58, 71).
Aa
White text reads best on this color (5.81:1).
About this color
#B33A47 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.156 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.024 away. White text reads best on it, at 5.81:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #B33A47 |
| RGB | rgb(179, 58, 71) |
| HSL | hsl(354, 51%, 46%) |
| OKLCH | oklch(52.7% 0.156 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 #B33A47 | 5.81:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #B33A47 | 3.61:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #B33A47 text on white | 5.81:1 | AA | Lc 78.1 | Fine for body text |
| #B33A47 text on black | 3.61:1 | AA large text | Lc -23.7 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F2CFCF
oklch(88.4% 0.039 17.9)
-
Step 300
300
#EBAFAF
oklch(80.9% 0.07 18.7)
-
Step 400
400
#DE8386
oklch(70.8% 0.112 18.2)
-
Step 500
500
#D26068
oklch(63.1% 0.144 17.9)
-
Step 600
600 (this color)
#B33A47
oklch(52.7% 0.156 18.2)
-
Step 700
700
#A33440
oklch(49.2% 0.146 18.2)
-
Step 800
800
#842C35
oklch(42.6% 0.121 17.9)
-
Step 900
900
#6A292E
oklch(37.6% 0.093 18.1)
-
Step 950
950
#3F191B
oklch(27.1% 0.059 18.7)
#B33A47 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) | #595547 | 0.171 |
| Deuteranopia (no green cones) | #786F44 | 0.158 |
| Tritanopia (no blue cones) | #C41E40 | 0.041 |
| Achromatopsia (no color) | #656565 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B33A47
#B33A47
oklch(52.7% 0.156 18.2)
- #007A7E
#007A7E
oklch(52.6% 0.089 198.8)
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 #B33A47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.024
- Dusty Red #B9484E ΔE 0.030
- Light Burgundy #A8415B ΔE 0.033
- Dark Rose #B5485D ΔE 0.034
- Light Maroon #A24857 ΔE 0.040
- Firebrick #B22222 ΔE 0.046
- Brown #A52A2A ΔE 0.051
- Rose Red #BE013C ΔE 0.051
Use #B33A47 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.