#B8381E
Closest named color: Sinopia (#BB3E03). oklch(52.7% 0.169 33.3), rgb(184, 56, 30).
Aa
White text reads best on this color (5.79:1).
About this color
#B8381E is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.169 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 5.79:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #B8381E |
| RGB | rgb(184, 56, 30) |
| HSL | hsl(10, 72%, 42%) |
| OKLCH | oklch(52.7% 0.169 33.3) |
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 #B8381E | 5.79:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #B8381E | 3.62:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #B8381E text on white | 5.79:1 | AA | Lc 77.8 | Fine for body text |
| #B8381E text on black | 3.62:1 | AA large text | Lc -23.9 | 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
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F4D0C7
oklch(88.6% 0.043 34.3)
-
Step 300
300
#EDAFA1
oklch(80.8% 0.076 33.1)
-
Step 400
400
#E2836E
oklch(70.8% 0.122 33.4)
-
Step 500
500
#D76047
oklch(63.2% 0.155 33.4)
-
Step 600
600 (this color)
#B8381E
oklch(52.7% 0.169 33.3)
-
Step 700
700
#A7321A
oklch(49.1% 0.157 33.3)
-
Step 800
800
#882B18
oklch(42.7% 0.131 33.4)
-
Step 900
900
#6D281B
oklch(37.6% 0.101 32.6)
-
Step 950
950
#401910
oklch(27% 0.063 34.3)
#B8381E 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) | #5E5319 | 0.176 |
| Deuteranopia (no green cones) | #7E7017 | 0.160 |
| Tritanopia (no blue cones) | #CB0433 | 0.061 |
| Achromatopsia (no color) | #656565 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B8381E
#B8381E
oklch(52.7% 0.169 33.3)
- #00788B
#00788B
oklch(52.6% 0.092 213.7)
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 #B8381E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.020
- Rusty Red #AF2F0D ΔE 0.027
- Dull Red #BB3F3F ΔE 0.032
- Firebrick #B22222 ΔE 0.038
- Rufous #AE2012 ΔE 0.043
- Rust Red #AA2704 ΔE 0.043
- Brick Orange #C14A09 ΔE 0.044
- Scarlet #BE0119 ΔE 0.048
Use #B8381E 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.