#B45501
Closest named color: Burnt Siena (#B75203). oklch(55.8% 0.145 50.9), rgb(180, 85, 1).
Aa
White text reads best on this color (4.95:1).
About this color
#B45501 is a medium-dark, vivid orange. In OKLCH its lightness is 56%, its chroma 0.145 and its hue 51°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.008 away. White text reads best on it, at 4.95:1.
| Hue family | Oranges |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.145) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.24:1 |
| White text | 4.95:1 |
Values
| HEX | #B45501 |
| RGB | rgb(180, 85, 1) |
| HSL | hsl(28, 99%, 35%) |
| OKLCH | oklch(55.8% 0.145 50.9) |
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 #B45501 | 4.95:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #B45501 | 4.24:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #B45501 text on white | 4.95:1 | AA | Lc 73.6 | Content text, not long reading |
| #B45501 text on black | 4.24:1 | AA large text | Lc -28.1 | 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
#FBF4F0
oklch(97.1% 0.009 52.1)
-
Step 100
100
#F5E7DF
oklch(93.7% 0.019 52)
-
Step 200
200
#EED3C4
oklch(88.5% 0.037 51)
-
Step 300
300
#E4B59B
oklch(80.9% 0.065 50.4)
-
Step 400
400
#D58D63
oklch(70.7% 0.105 50.6)
-
Step 500
500
#C86F34
oklch(63.2% 0.134 51.3)
-
Step 600
600 (this color)
#B45501
oklch(55.8% 0.145 50.9)
-
Step 700
700
#974600
oklch(49% 0.128 50.9)
-
Step 800
800
#7D3900
oklch(42.8% 0.111 51.1)
-
Step 900
900
#65320E
oklch(37.8% 0.087 51.3)
-
Step 950
950
#3B1E0A
oklch(27% 0.055 52.6)
#B45501 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) | #716300 | 0.125 |
| Deuteranopia (no green cones) | #887800 | 0.113 |
| Tritanopia (no blue cones) | #C63E48 | 0.087 |
| Achromatopsia (no color) | #707070 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B45501
#B45501
oklch(55.8% 0.145 50.9)
- #007FA9
#007FA9
oklch(55.9% 0.112 230.4)
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 #B45501, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.008
- Cinnamon #AC4F06 ΔE 0.022
- Orangey Brown #B16002 ΔE 0.025
- Burnt Orange #C04E01 ΔE 0.025
- Raw Umber #A75E09 ΔE 0.029
- Rust Orange #C45508 ΔE 0.031
- Brick Orange #C14A09 ΔE 0.032
- Copper #B66325 ΔE 0.032
Use #B45501 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.