#D03521
Closest named color: Brick Orange (#C14A09). oklch(56.6% 0.195 30.9), rgb(208, 53, 33).
Aa
White text reads best on this color (4.98:1).
About this color
#D03521 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.195 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.046 away. White text reads best on it, at 4.98:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #D03521 |
| RGB | rgb(208, 53, 33) |
| HSL | hsl(7, 73%, 47%) |
| OKLCH | oklch(56.6% 0.195 30.9) |
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 #D03521 | 4.98:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #D03521 | 4.21:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #D03521 text on white | 4.98:1 | AA | Lc 73.0 | Content text, not long reading |
| #D03521 text on black | 4.21:1 | AA large text | Lc -28.7 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F8CEC6
oklch(88.5% 0.049 30.7)
-
Step 300
300
#F4AC9E
oklch(80.9% 0.088 31.3)
-
Step 400
400
#EB7C69
oklch(70.7% 0.141 31)
-
Step 500
500
#E15440
oklch(63.1% 0.18 30.7)
-
Step 600
600 (this color)
#D03521
oklch(56.6% 0.195 30.9)
-
Step 700
700
#B0210E
oklch(49.1% 0.181 31)
-
Step 800
800
#8F1F11
oklch(42.7% 0.15 30.8)
-
Step 900
900
#732116
oklch(37.7% 0.117 30.8)
-
Step 950
950
#44150E
oklch(27% 0.074 30.9)
#D03521 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) | #655A1C | 0.207 |
| Deuteranopia (no green cones) | #8B7C17 | 0.188 |
| Tritanopia (no blue cones) | #E50032 | 0.053 |
| Achromatopsia (no color) | #707070 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D03521
#D03521
oklch(56.6% 0.195 30.9)
- #008597
#008597
oklch(56.6% 0.098 211.3)
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 #D03521, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.046
- Sinopia #BB3E03 ΔE 0.046
- Dull Red #BB3F3F ΔE 0.046
- Faded Red #D3494E ΔE 0.047
- Crimson #DC143C ΔE 0.048
- Cherry #CF0234 ΔE 0.050
- Dark Coral #CF524E ΔE 0.053
- Burnt Orange #C04E01 ΔE 0.054
Use #D03521 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.