#B45B00
Closest named color: Orangey Brown (#B16002). oklch(56.8% 0.141 54.5), rgb(180, 91, 0).
Aa
White text reads best on this color (4.73:1).
About this color
#B45B00 is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.141 and its hue 55°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Brown (#B16002), ΔE 0.012 away. White text reads best on it, at 4.73:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.141) |
| Temperature | warm |
| Nearest name | Orangey Brown (#B16002) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #B45B00 |
| RGB | rgb(180, 91, 0) |
| HSL | hsl(30, 100%, 35%) |
| OKLCH | oklch(56.8% 0.141 54.5) |
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 #B45B00 | 4.73:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #B45B00 | 4.43:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #B45B00 text on white | 4.73:1 | AA | Lc 72.3 | Content text, not long reading |
| #B45B00 text on black | 4.43:1 | AA large text | Lc -29.4 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#EDD4C4
oklch(88.6% 0.035 54.8)
-
Step 300
300
#E2B69A
oklch(80.8% 0.064 54.1)
-
Step 400
400
#D28F61
oklch(70.7% 0.102 54.8)
-
Step 500
500
#C57132
oklch(63.1% 0.131 54.2)
-
Step 600
600 (this color)
#B45B00
oklch(56.8% 0.141 54.5)
-
Step 700
700
#944A00
oklch(49.2% 0.122 54.7)
-
Step 800
800
#7A3C00
oklch(42.8% 0.106 54.9)
-
Step 900
900
#63330C
oklch(37.6% 0.085 54.4)
-
Step 950
950
#3A1E0A
oklch(26.9% 0.054 53.6)
#B45B00 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) | #766700 | 0.114 |
| Deuteranopia (no green cones) | #8B7B00 | 0.104 |
| Tritanopia (no blue cones) | #C6464D | 0.091 |
| Achromatopsia (no color) | #737373 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B45B00
#B45B00
oklch(56.8% 0.141 54.5)
- #0081B2
#0081B2
oklch(56.9% 0.119 234.1)
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 #B45B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Brown #B16002 ΔE 0.012
- Burnt Siena #B75203 ΔE 0.020
- Umber #B26400 ΔE 0.021
- Copper #B66325 ΔE 0.022
- Raw Umber #A75E09 ΔE 0.024
- Orange Brown #BE6400 ΔE 0.030
- Rust Orange #C45508 ΔE 0.032
- Burnt Orange #C04E01 ΔE 0.033
Use #B45B00 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.