#D0510B
Closest named color: Rusty Orange (#CD5909). oklch(59.6% 0.175 42.3), rgb(208, 81, 11).
Aa
Black text reads best on this color (4.86:1).
About this color
#D0510B is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.175 and its hue 42°. 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 4.86:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #D0510B |
| RGB | rgb(208, 81, 11) |
| HSL | hsl(21, 90%, 43%) |
| OKLCH | oklch(59.6% 0.175 42.3) |
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 #D0510B | 4.31:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #D0510B | 4.86:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #D0510B text on white | 4.31:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #D0510B text on black | 4.86:1 | AA | Lc -32.7 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DD
oklch(93.6% 0.025 43.2)
-
Step 200
200
#F6D0C1
oklch(88.6% 0.048 42.7)
-
Step 300
300
#F1AF95
oklch(81% 0.086 42.4)
-
Step 400
400
#E68158
oklch(70.6% 0.137 42.3)
-
Step 500
500 (this color)
#D0510B
oklch(59.6% 0.175 42.3)
-
Step 600
600
#BF4700
oklch(55.5% 0.167 42.1)
-
Step 700
700
#A13B00
oklch(49% 0.147 42.3)
-
Step 800
800
#852F00
oklch(42.6% 0.128 42.2)
-
Step 900
900
#702700
oklch(37.7% 0.113 42.6)
-
Step 950
950
#421805
oklch(27% 0.071 42.9)
#D0510B 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) | #766800 | 0.169 |
| Deuteranopia (no green cones) | #958400 | 0.153 |
| Tritanopia (no blue cones) | #E52E46 | 0.084 |
| Achromatopsia (no color) | #7A7A7A | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D0510B
#D0510B
oklch(59.6% 0.175 42.3)
- #008DAE
#008DAE
oklch(59.6% 0.11 222)
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 #D0510B, 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 0.022
- Rust Orange #C45508 ΔE 0.023
- Burnt Orange #C04E01 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.034
- Terra Cotta #C9643B ΔE 0.040
- Terracotta #CA6641 ΔE 0.046
- Rust #CA6702 ΔE 0.046
Use #D0510B 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.