#B04312
Closest named color: Sinopia (#BB3E03). oklch(52.6% 0.153 40.7), rgb(176, 67, 18).
Aa
White text reads best on this color (5.74:1).
About this color
#B04312 is a medium-dark, vivid orange. In OKLCH its lightness is 53%, its chroma 0.153 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.021 away. White text reads best on it, at 5.74:1.
| Hue family | Oranges |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #B04312 |
| RGB | rgb(176, 67, 18) |
| HSL | hsl(19, 81%, 38%) |
| OKLCH | oklch(52.6% 0.153 40.7) |
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 #B04312 | 5.74:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #B04312 | 3.65:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #B04312 text on white | 5.74:1 | AA | Lc 77.8 | Fine for body text |
| #B04312 text on black | 3.65:1 | AA large text | Lc -23.9 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#F1D1C6
oklch(88.5% 0.039 39.9)
-
Step 300
300
#E8B29F
oklch(80.8% 0.069 40.2)
-
Step 400
400
#DB886A
oklch(70.7% 0.111 40.6)
-
Step 500
500
#CF6841
oklch(63.2% 0.141 40.8)
-
Step 600
600 (this color)
#B04312
oklch(52.6% 0.153 40.7)
-
Step 700
700
#A03C10
oklch(49% 0.143 40.5)
-
Step 800
800
#823312
oklch(42.7% 0.118 40.8)
-
Step 900
900
#692E17
oklch(37.8% 0.092 40.9)
-
Step 950
950
#3E1B0E
oklch(27% 0.059 40.5)
#B04312 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) | #635707 | 0.150 |
| Deuteranopia (no green cones) | #7D6F0A | 0.136 |
| Tritanopia (no blue cones) | #C2263A | 0.070 |
| Achromatopsia (no color) | #666666 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B04312
#B04312
oklch(52.6% 0.153 40.7)
- #007791
#007791
oklch(52.7% 0.096 220.1)
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 #B04312, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.021
- Cinnamon #AC4F06 ΔE 0.027
- Burnt Umber #A0450E ΔE 0.032
- Rusty Red #AF2F0D ΔE 0.035
- Burnt Siena #B75203 ΔE 0.038
- Brick Orange #C14A09 ΔE 0.039
- Sienna #A0522D ΔE 0.039
- Russet #A13905 ΔE 0.039
Use #B04312 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.