#B74103
Closest named color: Sinopia (#BB3E03). oklch(53.5% 0.164 40.8), rgb(183, 65, 3).
Aa
White text reads best on this color (5.56:1).
About this color
#B74103 is a medium-dark, vivid orange. In OKLCH its lightness is 53%, its chroma 0.164 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.009 away. White text reads best on it, at 5.56:1.
| Hue family | Oranges |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #B74103 |
| RGB | rgb(183, 65, 3) |
| HSL | hsl(21, 97%, 36%) |
| OKLCH | oklch(53.5% 0.164 40.8) |
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 #B74103 | 5.56:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #B74103 | 3.77:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #B74103 text on white | 5.56:1 | AA | Lc 76.8 | Fine for body text |
| #B74103 text on black | 3.77:1 | AA large text | Lc -24.9 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EBB19C
oklch(80.9% 0.074 40.8)
-
Step 400
400
#DE8666
oklch(70.6% 0.118 40.6)
-
Step 500
500
#D3643A
oklch(63.1% 0.151 40.5)
-
Step 600
600 (this color)
#B74103
oklch(53.5% 0.164 40.8)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800
#853008
oklch(42.8% 0.126 41)
-
Step 900
900
#6B2B12
oklch(37.6% 0.099 40.4)
-
Step 950
950
#3F1A0C
oklch(26.9% 0.063 40.6)
#B74103 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) | #645700 | 0.161 |
| Deuteranopia (no green cones) | #817200 | 0.145 |
| Tritanopia (no blue cones) | #CA1D38 | 0.075 |
| Achromatopsia (no color) | #686868 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B74103
#B74103
oklch(53.5% 0.164 40.8)
- #007995
#007995
oklch(53.4% 0.098 221.4)
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 #B74103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.009
- Brick Orange #C14A09 ΔE 0.028
- Cinnamon #AC4F06 ΔE 0.032
- Burnt Orange #C04E01 ΔE 0.034
- Burnt Siena #B75203 ΔE 0.034
- Rusty Red #AF2F0D ΔE 0.039
- Burnt Umber #A0450E ΔE 0.044
- Dull Red #BB3F3F ΔE 0.048
Use #B74103 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.