#B64E37
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.14 34), rgb(182, 78, 55).
Aa
White text reads best on this color (5.07:1).
About this color
#B64E37 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.140 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.034 away. White text reads best on it, at 5.07:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.140) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #B64E37 |
| RGB | rgb(182, 78, 55) |
| HSL | hsl(11, 54%, 46%) |
| OKLCH | oklch(55.5% 0.14 34) |
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 #B64E37 | 5.07:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #B64E37 | 4.13:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #B64E37 text on white | 5.07:1 | AA | Lc 74.4 | Content text, not long reading |
| #B64E37 text on black | 4.13:1 | AA large text | Lc -27.3 | 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
#FBF4F2
oklch(97.2% 0.008 36.6)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#EFD1CA
oklch(88.4% 0.035 33.3)
-
Step 300
300
#E6B3A6
oklch(81% 0.063 34.7)
-
Step 400
400
#D88976
oklch(70.7% 0.101 34.2)
-
Step 500
500
#CB6953
oklch(63% 0.129 33.8)
-
Step 600
600 (this color)
#B64E37
oklch(55.5% 0.14 34)
-
Step 700
700
#9D3F2A
oklch(49.2% 0.13 34.1)
-
Step 800
800
#7F3424
oklch(42.6% 0.108 33.6)
-
Step 900
900
#672E22
oklch(37.7% 0.085 33.3)
-
Step 950
950
#3C1C14
oklch(27% 0.053 35.1)
#B64E37 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) | #6A6034 | 0.142 |
| Deuteranopia (no green cones) | #837734 | 0.132 |
| Tritanopia (no blue cones) | #C83849 | 0.058 |
| Achromatopsia (no color) | #6E6E6E | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B64E37
#B64E37
oklch(55.5% 0.14 34)
- #008196
#008196
oklch(55.5% 0.098 214.4)
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 #B64E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.034
- Brick Orange #C14A09 ΔE 0.034
- Dusty Red #B9484E ΔE 0.035
- Sinopia #BB3E03 ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.038
- Burnt Siena #B75203 ΔE 0.038
- Cinnamon #AC4F06 ΔE 0.041
- Sienna #A0522D ΔE 0.045
Use #B64E37 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.