#BB5313
Closest named color: Burnt Siena (#B75203). oklch(56.6% 0.151 46), rgb(187, 83, 19).
Aa
White text reads best on this color (4.81:1).
About this color
#BB5313 is a medium-dark, vivid orange. In OKLCH its lightness is 57%, its chroma 0.151 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.010 away. White text reads best on it, at 4.81:1.
| Hue family | Oranges |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.35:1 |
| White text | 4.81:1 |
Values
| HEX | #BB5313 |
| RGB | rgb(187, 83, 19) |
| HSL | hsl(23, 82%, 40%) |
| OKLCH | oklch(56.6% 0.151 46) |
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 #BB5313 | 4.81:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #BB5313 | 4.35:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #BB5313 text on white | 4.81:1 | AA | Lc 72.7 | Content text, not long reading |
| #BB5313 text on black | 4.35:1 | AA large text | Lc -29.0 | 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
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#EFD2C5
oklch(88.4% 0.037 45.6)
-
Step 300
300
#E7B49C
oklch(81% 0.068 46.4)
-
Step 400
400
#D88A65
oklch(70.6% 0.109 45.9)
-
Step 500
500
#CC6B39
oklch(63.1% 0.138 46.1)
-
Step 600
600 (this color)
#BB5313
oklch(56.6% 0.151 46)
-
Step 700
700
#9D4100
oklch(49.2% 0.138 46.2)
-
Step 800
800
#803506
oklch(42.6% 0.116 45.7)
-
Step 900
900
#672F11
oklch(37.6% 0.09 45.8)
-
Step 950
950
#3D1C0C
oklch(27% 0.058 45.1)
#BB5313 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) | #716303 | 0.140 |
| Deuteranopia (no green cones) | #8A7B0D | 0.127 |
| Tritanopia (no blue cones) | #CE3A48 | 0.082 |
| Achromatopsia (no color) | #727272 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB5313
#BB5313
oklch(56.6% 0.151 46)
- #0082A7
#0082A7
oklch(56.5% 0.109 226.6)
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 #BB5313, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.010
- Burnt Orange #C04E01 ΔE 0.012
- Brick Orange #C14A09 ΔE 0.019
- Rust Orange #C45508 ΔE 0.019
- Cinnamon #AC4F06 ΔE 0.032
- Copper #B66325 ΔE 0.034
- Orangey Brown #B16002 ΔE 0.035
- Rusty Orange #CD5909 ΔE 0.039
Use #BB5313 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.