#D55507
Closest named color: Rusty Orange (#CD5909). oklch(60.9% 0.177 43.4), rgb(213, 85, 7).
Aa
Black text reads best on this color (5.13:1).
About this color
#D55507 is a medium-dark, vivid orange. In OKLCH its lightness is 61%, its chroma 0.177 and its hue 43°. 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 5.13:1.
| Hue family | Oranges |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #D55507 |
| RGB | rgb(213, 85, 7) |
| HSL | hsl(23, 94%, 43%) |
| OKLCH | oklch(60.9% 0.177 43.4) |
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 #D55507 | 4.09:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #D55507 | 5.13:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #D55507 text on white | 4.09:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #D55507 text on black | 5.13:1 | AA | Lc -34.5 | 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
#F9E5DD
oklch(93.6% 0.025 43.2)
-
Step 200
200
#F6D0C0
oklch(88.6% 0.048 44.1)
-
Step 300
300
#F1AF94
oklch(80.9% 0.086 43.2)
-
Step 400
400
#E78155
oklch(70.7% 0.139 43.4)
-
Step 500
500 (this color)
#D55507
oklch(60.9% 0.177 43.4)
-
Step 600
600
#BD4900
oklch(55.5% 0.164 43.3)
-
Step 700
700
#A03D00
oklch(49.1% 0.144 43.5)
-
Step 800
800
#843100
oklch(42.7% 0.125 43.5)
-
Step 900
900
#6F2800
oklch(37.7% 0.111 43.6)
-
Step 950
950
#421804
oklch(27% 0.072 43.8)
#D55507 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) | #7B6B00 | 0.168 |
| Deuteranopia (no green cones) | #9A8800 | 0.152 |
| Tritanopia (no blue cones) | #EB3349 | 0.087 |
| Achromatopsia (no color) | #7D7D7D | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D55507
#D55507
oklch(60.9% 0.177 43.4)
- #0091B5
#0091B5
oklch(61% 0.114 223.5)
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 #D55507, 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 0.017
- Rust Orange #C45508 ΔE 0.033
- Terra Cotta #C9643B ΔE 0.038
- Chocolate #D2691E ΔE 0.039
- Rust #CA6702 ΔE 0.040
- Terracotta #CA6641 ΔE 0.042
- Terracota #CB6843 ΔE 0.045
Use #D55507 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.