#B8403F
Closest named color: Dull Red (#BB3F3F). oklch(54.1% 0.156 24.4), rgb(184, 64, 63).
Aa
White text reads best on this color (5.46:1).
About this color
#B8403F is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.156 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.006 away. White text reads best on it, at 5.46:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #B8403F |
| RGB | rgb(184, 64, 63) |
| HSL | hsl(0, 49%, 48%) |
| OKLCH | oklch(54.1% 0.156 24.4) |
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 #B8403F | 5.46:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #B8403F | 3.84:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #B8403F text on white | 5.46:1 | AA | Lc 76.4 | Fine for body text |
| #B8403F text on black | 3.84:1 | AA large text | Lc -25.4 | 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
#F7E5E3
oklch(93.6% 0.02 25.2)
-
Step 200
200
#F2D0CD
oklch(88.5% 0.039 23.9)
-
Step 300
300
#EBB0AA
oklch(81% 0.07 25.3)
-
Step 400
400
#DE847E
oklch(70.8% 0.112 24.4)
-
Step 500
500
#D2625D
oklch(63.1% 0.143 24.6)
-
Step 600
600 (this color)
#B8403F
oklch(54.1% 0.156 24.4)
-
Step 700
700
#A33635
oklch(49.2% 0.144 24.6)
-
Step 800
800
#842D2C
oklch(42.6% 0.12 24.3)
-
Step 900
900
#6B2A28
oklch(37.8% 0.094 24.4)
-
Step 950
950
#3F1918
oklch(27% 0.06 23.4)
#B8403F 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) | #60593E | 0.166 |
| Deuteranopia (no green cones) | #7E733C | 0.154 |
| Tritanopia (no blue cones) | #CA2441 | 0.047 |
| Achromatopsia (no color) | #696969 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B8403F
#B8403F
oklch(54.1% 0.156 24.4)
- #007E88
#007E88
oklch(54.1% 0.092 204.6)
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 #B8403F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.006
- Dusty Red #B9484E ΔE 0.021
- Dark Rose #B5485D ΔE 0.038
- Sinopia #BB3E03 ΔE 0.044
- Light Burgundy #A8415B ΔE 0.050
- Light Maroon #A24857 ΔE 0.050
- Firebrick #B22222 ΔE 0.050
- Rusty Red #AF2F0D ΔE 0.051
Use #B8403F 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.