#B73E06
Closest named color: Sinopia (#BB3E03). oklch(53.1% 0.166 39.3), rgb(183, 62, 6).
Aa
White text reads best on this color (5.66:1).
About this color
#B73E06 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.166 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.008 away. White text reads best on it, at 5.66:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #B73E06 |
| RGB | rgb(183, 62, 6) |
| HSL | hsl(19, 94%, 37%) |
| OKLCH | oklch(53.1% 0.166 39.3) |
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 #B73E06 | 5.66:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #B73E06 | 3.70:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #B73E06 text on white | 5.66:1 | AA | Lc 77.3 | Fine for body text |
| #B73E06 text on black | 3.70:1 | AA large text | Lc -24.5 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F3D1C5
oklch(88.6% 0.042 40.4)
-
Step 300
300
#ECB19D
oklch(81% 0.075 39.5)
-
Step 400
400
#DF8567
oklch(70.6% 0.119 39.2)
-
Step 500
500
#D4633C
oklch(63.1% 0.153 39.2)
-
Step 600
600 (this color)
#B73E06
oklch(53.1% 0.166 39.3)
-
Step 700
700
#A53603
oklch(49.1% 0.155 39.2)
-
Step 800
800
#862E0A
oklch(42.7% 0.128 39.3)
-
Step 900
900
#6C2B13
oklch(37.8% 0.099 39.6)
-
Step 950
950
#3F1A0D
oklch(27% 0.062 39.6)
#B73E06 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) | #625600 | 0.166 |
| Deuteranopia (no green cones) | #807100 | 0.149 |
| Tritanopia (no blue cones) | #CA1635 | 0.072 |
| Achromatopsia (no color) | #676767 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B73E06
#B73E06
oklch(53.1% 0.166 39.3)
- #007992
#007992
oklch(53.2% 0.096 218.9)
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 #B73E06, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.008
- Brick Orange #C14A09 ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.039
- Burnt Siena #B75203 ΔE 0.040
- Burnt Umber #A0450E ΔE 0.045
- Dull Red #BB3F3F ΔE 0.045
Use #B73E06 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.