#D73A1B
Closest named color: Deep Orange (#DC4D01). oklch(58.3% 0.198 32.9), rgb(215, 58, 27).
Aa
White text reads best on this color (4.65:1).
About this color
#D73A1B is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.198 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.038 away. White text reads best on it, at 4.65:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 4.51:1 |
| White text | 4.65:1 |
Values
| HEX | #D73A1B |
| RGB | rgb(215, 58, 27) |
| HSL | hsl(10, 78%, 47%) |
| OKLCH | oklch(58.3% 0.198 32.9) |
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 #D73A1B | 4.65:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #D73A1B | 4.51:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #D73A1B text on white | 4.65:1 | AA | Lc 70.9 | Content text, not long reading |
| #D73A1B text on black | 4.51:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F4AC9C
oklch(80.9% 0.088 33)
-
Step 400
400
#EC7C65
oklch(70.8% 0.143 32.8)
-
Step 500
500
#E25438
oklch(63.1% 0.182 33.1)
-
Step 600
600 (this color)
#D73A1B
oklch(58.3% 0.198 32.9)
-
Step 700
700
#B02100
oklch(49% 0.182 32.8)
-
Step 800
800
#901E06
oklch(42.7% 0.153 32.9)
-
Step 900
900
#742111
oklch(37.8% 0.119 32.9)
-
Step 950
950
#44150C
oklch(27% 0.075 32.8)
#D73A1B 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) | #6B5E14 | 0.208 |
| Deuteranopia (no green cones) | #91810E | 0.189 |
| Tritanopia (no blue cones) | #ED0035 | 0.061 |
| Achromatopsia (no color) | #747474 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D73A1B
#D73A1B
oklch(58.3% 0.198 32.9)
- #008A9F
#008A9F
oklch(58.2% 0.102 213.3)
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 #D73A1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.038
- Tomato Red #EC2D01 ΔE 0.039
- Faded Red #D3494E ΔE 0.045
- Brick Orange #C14A09 ΔE 0.048
- Imperial Red #E63946 ΔE 0.049
- Dark Coral #CF524E ΔE 0.050
- Pale Red #D9544D ΔE 0.052
- Crimson #DC143C ΔE 0.054
Use #D73A1B 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.