#B64F1F
Closest named color: Burnt Siena (#B75203). oklch(55.3% 0.146 42.6), rgb(182, 79, 31).
Aa
White text reads best on this color (5.08:1).
About this color
#B64F1F is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.146 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.016 away. White text reads best on it, at 5.08:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.12:1 |
| White text | 5.08:1 |
Values
| HEX | #B64F1F |
| RGB | rgb(182, 79, 31) |
| HSL | hsl(19, 71%, 42%) |
| OKLCH | oklch(55.3% 0.146 42.6) |
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 #B64F1F | 5.08:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #B64F1F | 4.12:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #B64F1F text on white | 5.08:1 | AA | Lc 74.4 | Content text, not long reading |
| #B64F1F text on black | 4.12:1 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#EFD2C6
oklch(88.5% 0.037 43.8)
-
Step 300
300
#E6B39F
oklch(80.8% 0.066 42.4)
-
Step 400
400
#D88A6B
oklch(70.7% 0.105 42.4)
-
Step 500
500
#CB6B42
oklch(63.1% 0.134 42.9)
-
Step 600
600 (this color)
#B64F1F
oklch(55.3% 0.146 42.6)
-
Step 700
700
#9D4012
oklch(49.1% 0.136 42.7)
-
Step 800
800
#803513
oklch(42.7% 0.113 42.2)
-
Step 900
900
#672F17
oklch(37.7% 0.088 42.5)
-
Step 950
950
#3D1C0F
oklch(27% 0.056 41.6)
#B64F1F 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) | #6C6017 | 0.140 |
| Deuteranopia (no green cones) | #85771B | 0.127 |
| Tritanopia (no blue cones) | #C83746 | 0.073 |
| Achromatopsia (no color) | #6E6E6E | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B64F1F
#B64F1F
oklch(55.3% 0.146 42.6)
- #007F9E
#007F9E
oklch(55.3% 0.103 222.8)
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 #B64F1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.016
- Burnt Orange #C04E01 ΔE 0.021
- Brick Orange #C14A09 ΔE 0.022
- Cinnamon #AC4F06 ΔE 0.024
- Sinopia #BB3E03 ΔE 0.030
- Rust Orange #C45508 ΔE 0.034
- Sienna #A0522D ΔE 0.041
- Copper #B66325 ΔE 0.044
Use #B64F1F 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.