#B3402F
Closest named color: Dull Red (#BB3F3F). oklch(53% 0.153 31.1), rgb(179, 64, 47).
Aa
White text reads best on this color (5.68:1).
About this color
#B3402F is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.153 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.025 away. White text reads best on it, at 5.68:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #B3402F |
| RGB | rgb(179, 64, 47) |
| HSL | hsl(8, 58%, 44%) |
| OKLCH | oklch(53% 0.153 31.1) |
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 #B3402F | 5.68:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #B3402F | 3.69:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #B3402F text on white | 5.68:1 | AA | Lc 77.6 | Fine for body text |
| #B3402F text on black | 3.69:1 | AA large text | Lc -24.2 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F1D0CA
oklch(88.4% 0.038 30)
-
Step 300
300
#EAB1A6
oklch(81% 0.069 31)
-
Step 400
400
#DD8676
oklch(70.8% 0.11 31.2)
-
Step 500
500
#D16452
oklch(63.1% 0.142 31)
-
Step 600
600 (this color)
#B3402F
oklch(53% 0.153 31.1)
-
Step 700
700
#A23929
oklch(49.2% 0.142 31.3)
-
Step 800
800
#833023
oklch(42.7% 0.117 31.3)
-
Step 900
900
#6A2C21
oklch(37.8% 0.092 31.9)
-
Step 950
950
#3E1A14
oklch(26.9% 0.058 31)
#B3402F 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) | #60572C | 0.159 |
| Deuteranopia (no green cones) | #7C702B | 0.147 |
| Tritanopia (no blue cones) | #C5233D | 0.055 |
| Achromatopsia (no color) | #676767 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3402F
#B3402F
oklch(53% 0.153 31.1)
- #007A8A
#007A8A
oklch(53.1% 0.092 210.7)
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 #B3402F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.025
- Sinopia #BB3E03 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.035
- Dusty Red #B9484E ΔE 0.039
- Firebrick #B22222 ΔE 0.044
- Brick #A03623 ΔE 0.047
- Brick Orange #C14A09 ΔE 0.047
- Cinnamon #AC4F06 ΔE 0.048
Use #B3402F 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.