#B45000
Closest named color: Burnt Siena (#B75203). oklch(55% 0.149 48.4), rgb(180, 80, 0).
Aa
White text reads best on this color (5.13:1).
About this color
#B45000 is a medium-dark, vivid orange. In OKLCH its lightness is 55%, its chroma 0.149 and its hue 48°. 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 5.13:1.
| Hue family | Oranges |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.08:1 |
| White text | 5.13:1 |
Values
| HEX | #B45000 |
| RGB | rgb(180, 80, 0) |
| HSL | hsl(27, 100%, 35%) |
| OKLCH | oklch(55% 0.149 48.4) |
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 #B45000 | 5.13:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #B45000 | 4.08:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #B45000 text on white | 5.13:1 | AA | Lc 74.7 | Content text, not long reading |
| #B45000 text on black | 4.08:1 | AA large text | Lc -27.0 | 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
#F5E6DF
oklch(93.5% 0.019 46.8)
-
Step 200
200
#EFD2C4
oklch(88.4% 0.038 47.4)
-
Step 300
300
#E6B49B
oklch(80.9% 0.068 47.9)
-
Step 400
400
#D78C64
oklch(70.8% 0.107 48.5)
-
Step 500
500
#CA6C36
oklch(63% 0.137 48.2)
-
Step 600
600 (this color)
#B45000
oklch(55% 0.149 48.4)
-
Step 700
700
#9A4300
oklch(49% 0.133 48.1)
-
Step 800
800
#7F3701
oklch(42.8% 0.115 48.6)
-
Step 900
900
#66300F
oklch(37.6% 0.089 48.2)
-
Step 950
950
#3C1D0B
oklch(27% 0.056 48.8)
#B45000 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) | #6D5F00 | 0.133 |
| Deuteranopia (no green cones) | #867600 | 0.120 |
| Tritanopia (no blue cones) | #C63844 | 0.083 |
| Achromatopsia (no color) | #6D6D6D | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B45000
#B45000
oklch(55% 0.149 48.4)
- #007DA3
#007DA3
oklch(55.1% 0.108 228.2)
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 #B45000, 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 0.016
- Burnt Orange #C04E01 ΔE 0.023
- Brick Orange #C14A09 ΔE 0.027
- Rust Orange #C45508 ΔE 0.034
- Sinopia #BB3E03 ΔE 0.036
- Orangey Brown #B16002 ΔE 0.036
- Raw Umber #A75E09 ΔE 0.037
Use #B45000 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.