#D03900
Closest named color: Brick Orange (#C14A09). oklch(56.9% 0.195 36), rgb(208, 57, 0).
Aa
White text reads best on this color (4.92:1).
About this color
#D03900 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.195 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.035 away. White text reads best on it, at 4.92:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #D03900 |
| RGB | rgb(208, 57, 0) |
| HSL | hsl(16, 100%, 41%) |
| OKLCH | oklch(56.9% 0.195 36) |
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 #D03900 | 4.92:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #D03900 | 4.26:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #D03900 text on white | 4.92:1 | AA | Lc 72.6 | Content text, not long reading |
| #D03900 text on black | 4.26:1 | AA large text | Lc -29.1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE4DE
oklch(93.5% 0.026 35.7)
-
Step 200
200
#F7CFC3
oklch(88.5% 0.048 37.3)
-
Step 300
300
#F3AD9A
oklch(80.9% 0.087 35.8)
-
Step 400
400
#EA7E61
oklch(70.8% 0.14 36)
-
Step 500
500
#E05731
oklch(63.1% 0.179 36.1)
-
Step 600
600 (this color)
#D03900
oklch(56.9% 0.195 36)
-
Step 700
700
#AB2D00
oklch(49.1% 0.169 35.9)
-
Step 800
800
#8D2400
oklch(42.7% 0.146 36.1)
-
Step 900
900
#73230C
oklch(37.8% 0.117 35.9)
-
Step 950
950
#431609
oklch(26.9% 0.073 36.7)
#D03900 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) | #685B00 | 0.201 |
| Deuteranopia (no green cones) | #8D7D00 | 0.181 |
| Tritanopia (no blue cones) | #E60031 | 0.066 |
| Achromatopsia (no color) | #707070 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D03900
#D03900
oklch(56.9% 0.195 36)
- #00859D
#00859D
oklch(56.8% 0.101 216.4)
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 #D03900, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.035
- Sinopia #BB3E03 ΔE 0.041
- Burnt Orange #C04E01 ΔE 0.042
- Deep Orange #DC4D01 ΔE 0.044
- Rust Orange #C45508 ΔE 0.049
- Tomato Red #EC2D01 ΔE 0.054
- Rusty Orange #CD5909 ΔE 0.055
- Dull Red #BB3F3F ΔE 0.056
Use #D03900 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.