#D55B03
Closest named color: Rusty Orange (#CD5909). oklch(61.7% 0.172 46), rgb(213, 91, 3).
Aa
Black text reads best on this color (5.32:1).
About this color
#D55B03 is a medium-dark, vivid orange. In OKLCH its lightness is 62%, its chroma 0.172 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.016 away. Black text reads best on it, at 5.32:1.
| Hue family | Oranges |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.172) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #D55B03 |
| RGB | rgb(213, 91, 3) |
| HSL | hsl(25, 97%, 42%) |
| OKLCH | oklch(61.7% 0.172 46) |
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 #D55B03 | 3.94:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #D55B03 | 5.32:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #D55B03 text on white | 3.94:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #D55B03 text on black | 5.32:1 | AA | Lc -35.7 | 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 500.
-
Step 50
50
#FCF3EF
oklch(97% 0.011 45.7)
-
Step 100
100
#F9E5DD
oklch(93.6% 0.025 43.2)
-
Step 200
200
#F5D0C0
oklch(88.5% 0.047 44.7)
-
Step 300
300
#EFB093
oklch(80.9% 0.084 45.8)
-
Step 400
400
#E48354
oklch(70.6% 0.135 45.7)
-
Step 500
500 (this color)
#D55B03
oklch(61.7% 0.172 46)
-
Step 600
600
#BA4E00
oklch(55.7% 0.157 46)
-
Step 700
700
#9D4100
oklch(49.2% 0.138 46.2)
-
Step 800
800
#813400
oklch(42.6% 0.119 46.2)
-
Step 900
900
#6D2A00
oklch(37.7% 0.107 45.6)
-
Step 950
950
#411903
oklch(27% 0.07 46.5)
#D55B03 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) | #7F6F00 | 0.158 |
| Deuteranopia (no green cones) | #9C8B00 | 0.145 |
| Tritanopia (no blue cones) | #EB3C4E | 0.092 |
| Achromatopsia (no color) | #808080 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D55B03
#D55B03
oklch(61.7% 0.172 46)
- #0093BB
#0093BB
oklch(61.8% 0.118 225.7)
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 #D55B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.016
- Deep Orange #DC4D01 ΔE 0.027
- Chocolate #D2691E ΔE 0.027
- Rust #CA6702 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.034
- Rust Orange #C45508 ΔE 0.037
- Browny Orange #CA6B02 ΔE 0.037
- Terracotta #CA6641 ΔE 0.038
Use #D55B03 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.