#BF3A21
Closest named color: Sinopia (#BB3E03). oklch(54.2% 0.174 32.8), rgb(191, 58, 33).
Aa
White text reads best on this color (5.46:1).
About this color
#BF3A21 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.174 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.020 away. White text reads best on it, at 5.46:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #BF3A21 |
| RGB | rgb(191, 58, 33) |
| HSL | hsl(9, 71%, 44%) |
| OKLCH | oklch(54.2% 0.174 32.8) |
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 #BF3A21 | 5.46:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #BF3A21 | 3.84:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #BF3A21 text on white | 5.46:1 | AA | Lc 76.1 | Fine for body text |
| #BF3A21 text on black | 3.84:1 | AA large text | Lc -25.6 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F4CFC7
oklch(88.4% 0.043 32.2)
-
Step 300
300
#EFAFA1
oklch(81% 0.078 32.7)
-
Step 400
400
#E3826D
oklch(70.7% 0.124 33.2)
-
Step 500
500
#D95E46
oklch(63.2% 0.16 32.8)
-
Step 600
600 (this color)
#BF3A21
oklch(54.2% 0.174 32.8)
-
Step 700
700
#A92F18
oklch(49.1% 0.162 32.7)
-
Step 800
800
#892917
oklch(42.7% 0.134 32.8)
-
Step 900
900
#6E271A
oklch(37.6% 0.104 32.4)
-
Step 950
950
#411810
oklch(27% 0.066 32.7)
#BF3A21 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) | #61571C | 0.182 |
| Deuteranopia (no green cones) | #82741A | 0.165 |
| Tritanopia (no blue cones) | #D30336 | 0.063 |
| Achromatopsia (no color) | #696969 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BF3A21
#BF3A21
oklch(54.2% 0.174 32.8)
- #007D90
#007D90
oklch(54.2% 0.095 213.1)
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 #BF3A21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.020
- Dull Red #BB3F3F ΔE 0.029
- Brick Orange #C14A09 ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.041
- Burnt Orange #C04E01 ΔE 0.044
- Dusty Red #B9484E ΔE 0.047
- Firebrick #B22222 ΔE 0.049
- Burnt Siena #B75203 ΔE 0.052
Use #BF3A21 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.