#CB5021
Closest named color: Rust Orange (#C45508). oklch(58.8% 0.167 39.4), rgb(203, 80, 33).
Aa
Black text reads best on this color (4.70:1).
About this color
#CB5021 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.167 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Orange (#C45508), ΔE 0.022 away. Black text reads best on it, at 4.70:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Rust Orange (#C45508) |
| Black text | 4.70:1 |
| White text | 4.45:1 |
Values
| HEX | #CB5021 |
| RGB | rgb(203, 80, 33) |
| HSL | hsl(17, 72%, 46%) |
| OKLCH | oklch(58.8% 0.167 39.4) |
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 #CB5021 | 4.45:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #CB5021 | 4.70:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #CB5021 text on white | 4.45:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #CB5021 text on black | 4.70:1 | AA | Lc -31.6 | 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 600.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F8E5DF
oklch(93.5% 0.022 38.3)
-
Step 200
200
#F3D1C5
oklch(88.6% 0.042 40.4)
-
Step 300
300
#ECB19D
oklch(81% 0.075 39.5)
-
Step 400
400
#E08566
oklch(70.7% 0.121 39.5)
-
Step 500
500
#D4633B
oklch(63.1% 0.153 39.5)
-
Step 600
600 (this color)
#CB5021
oklch(58.8% 0.167 39.4)
-
Step 700
700
#A53601
oklch(49.1% 0.155 39.5)
-
Step 800
800
#862E09
oklch(42.7% 0.128 39.5)
-
Step 900
900
#6C2A13
oklch(37.6% 0.1 38.9)
-
Step 950
950
#401A0C
oklch(27.1% 0.064 40.2)
#CB5021 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) | #736619 | 0.165 |
| Deuteranopia (no green cones) | #91821B | 0.151 |
| Tritanopia (no blue cones) | #DF3047 | 0.076 |
| Achromatopsia (no color) | #777777 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB5021
#CB5021
oklch(58.8% 0.167 39.4)
- #008BA8
#008BA8
oklch(58.9% 0.107 219.4)
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 #CB5021, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Orange #C45508 ΔE 0.022
- Rusty Orange #CD5909 ΔE 0.025
- Brick Orange #C14A09 ΔE 0.026
- Burnt Orange #C04E01 ΔE 0.027
- Deep Orange #DC4D01 ΔE 0.033
- Terra Cotta #C9643B ΔE 0.040
- Burnt Siena #B75203 ΔE 0.042
- Dark Coral #CF524E ΔE 0.044
Use #CB5021 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.