#CB570E
Closest named color: Rusty Orange (#CD5909). oklch(59.6% 0.165 45.3), rgb(203, 87, 14).
Aa
Black text reads best on this color (4.90:1).
About this color
#CB570E is a medium-dark, vivid orange. In OKLCH its lightness is 60%, its chroma 0.165 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Orange (#CD5909), ΔE 0.006 away. Black text reads best on it, at 4.90:1.
| Hue family | Oranges |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Rusty Orange (#CD5909) |
| Black text | 4.90:1 |
| White text | 4.27:1 |
Values
| HEX | #CB570E |
| RGB | rgb(203, 87, 14) |
| HSL | hsl(23, 87%, 43%) |
| OKLCH | oklch(59.6% 0.165 45.3) |
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 #CB570E | 4.27:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #CB570E | 4.90:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #CB570E text on white | 4.27:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #CB570E text on black | 4.90:1 | AA | Lc -32.9 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E5DD
oklch(93.5% 0.024 44.3)
-
Step 200
200
#F4D1C1
oklch(88.6% 0.045 46)
-
Step 300
300
#EDB195
oklch(80.9% 0.08 46.1)
-
Step 400
400
#E28559
oklch(70.8% 0.129 45.4)
-
Step 500
500 (this color)
#CB570E
oklch(59.6% 0.165 45.3)
-
Step 600
600
#BB4D00
oklch(55.7% 0.158 45.4)
-
Step 700
700
#9E4000
oklch(49.2% 0.14 45.4)
-
Step 800
800
#823300
oklch(42.6% 0.121 45.2)
-
Step 900
900
#6D2A00
oklch(37.7% 0.107 45.6)
-
Step 950
950
#401905
oklch(26.8% 0.068 45.3)
#CB570E 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 | 0.153 |
| Deuteranopia (no green cones) | #958404 | 0.139 |
| Tritanopia (no blue cones) | #E03A4B | 0.087 |
| Achromatopsia (no color) | #7A7A7A | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB570E
#CB570E
oklch(59.6% 0.165 45.3)
- #008CB2
#008CB2
oklch(59.6% 0.113 225.6)
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 #CB570E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Orange #CD5909 ΔE 0.006
- Rust Orange #C45508 ΔE 0.015
- Burnt Orange #C04E01 ΔE 0.030
- Terra Cotta #C9643B ΔE 0.033
- Deep Orange #DC4D01 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.035
- Rust #CA6702 ΔE 0.035
- Orange Brown #BE6400 ΔE 0.036
Use #CB570E 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.