#D55310
Closest named color: Deep Orange (#DC4D01). oklch(60.7% 0.177 41.8), rgb(213, 83, 16).
Aa
Black text reads best on this color (5.07:1).
About this color
#D55310 is a medium-dark, vivid orange. In OKLCH its lightness is 61%, its chroma 0.177 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Orange (#DC4D01), ΔE 0.015 away. Black text reads best on it, at 5.07:1.
| Hue family | Oranges |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Deep Orange (#DC4D01) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #D55310 |
| RGB | rgb(213, 83, 16) |
| HSL | hsl(20, 86%, 45%) |
| OKLCH | oklch(60.7% 0.177 41.8) |
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 #D55310 | 4.13:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #D55310 | 5.07:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #D55310 text on white | 4.13:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #D55310 text on black | 5.07:1 | AA | Lc -34.1 | 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
#FDF3EF
oklch(97.1% 0.012 43.3)
-
Step 100
100
#FAE5DD
oklch(93.7% 0.026 42.1)
-
Step 200
200
#F6CFC1
oklch(88.4% 0.048 40.7)
-
Step 300
300
#F1AE95
oklch(80.8% 0.086 41.3)
-
Step 400
400
#E88058
oklch(70.7% 0.139 41.4)
-
Step 500
500 (this color)
#D55310
oklch(60.7% 0.177 41.8)
-
Step 600
600
#C04600
oklch(55.6% 0.169 41.6)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#712600
oklch(37.8% 0.115 41.7)
-
Step 950
950
#431705
oklch(27% 0.074 41.3)
#D55310 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) | #796A00 | 0.173 |
| Deuteranopia (no green cones) | #998803 | 0.157 |
| Tritanopia (no blue cones) | #EB3048 | 0.084 |
| Achromatopsia (no color) | #7D7D7D | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D55310
#D55310
oklch(60.7% 0.177 41.8)
- #0090B2
#0090B2
oklch(60.6% 0.112 222.3)
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 #D55310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Orange #DC4D01 ΔE 0.015
- Rusty Orange #CD5909 ΔE 0.018
- Rust Orange #C45508 ΔE 0.033
- Terra Cotta #C9643B ΔE 0.039
- Terracotta #CA6641 ΔE 0.043
- Chocolate #D2691E ΔE 0.043
- Burnt Orange #C04E01 ΔE 0.044
- Rust #CA6702 ΔE 0.045
Use #D55310 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.