#BF5637
Closest named color: Rust Orange (#C45508). oklch(58% 0.143 37.1), rgb(191, 86, 55).
Aa
Black text reads best on this color (4.60:1).
About this color
#BF5637 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.143 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.030 away. Black text reads best on it, at 4.60:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #BF5637 |
| RGB | rgb(191, 86, 55) |
| HSL | hsl(14, 55%, 48%) |
| OKLCH | oklch(58% 0.143 37.1) |
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 #BF5637 | 4.56:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #BF5637 | 4.60:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #BF5637 text on white | 4.56:1 | AA | Lc 71.1 | Content text, not long reading |
| #BF5637 text on black | 4.60:1 | AA | Lc -30.6 | Non-text elements, placeholder text |
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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#EFD2C9
oklch(88.6% 0.035 38)
-
Step 300
300
#E6B3A4
oklch(80.9% 0.063 37)
-
Step 400
400
#D88972
oklch(70.6% 0.103 37)
-
Step 500
500
#CC6A4D
oklch(63.2% 0.132 37.3)
-
Step 600
600 (this color)
#BF5637
oklch(58% 0.143 37.1)
-
Step 700
700
#9D3F22
oklch(49.1% 0.133 37.4)
-
Step 800
800
#80351E
oklch(42.8% 0.11 37.5)
-
Step 900
900
#672F1E
oklch(37.8% 0.085 37.6)
-
Step 950
950
#3D1C12
oklch(27.1% 0.055 37.6)
#BF5637 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) | #726733 | 0.142 |
| Deuteranopia (no green cones) | #8C7E34 | 0.129 |
| Tritanopia (no blue cones) | #D1404F | 0.063 |
| Achromatopsia (no color) | #767676 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BF5637
#BF5637
oklch(58% 0.143 37.1)
- #0089A2
#0089A2
oklch(58.1% 0.104 216.6)
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 #BF5637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.030
- Burnt Orange #C04E01 ΔE 0.031
- Brick Orange #C14A09 ΔE 0.031
- Burnt Siena #B75203 ΔE 0.037
- Terra Cotta #C9643B ΔE 0.038
- Rusty Orange #CD5909 ΔE 0.040
- Copper #B66325 ΔE 0.041
- Dark Coral #CF524E ΔE 0.043
Use #BF5637 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.