#CB4B03
Closest named color: Brick Orange (#C14A09). oklch(58% 0.175 41.5), rgb(203, 75, 3).
Aa
White text reads best on this color (4.61:1).
About this color
#CB4B03 is a medium-dark, vivid orange. In OKLCH its lightness is 58%, its chroma 0.175 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.020 away. White text reads best on it, at 4.61:1.
| Hue family | Oranges |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.175) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.54:1 |
| White text | 4.61:1 |
Values
| HEX | #CB4B03 |
| RGB | rgb(203, 75, 3) |
| HSL | hsl(22, 97%, 40%) |
| OKLCH | oklch(58% 0.175 41.5) |
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 #CB4B03 | 4.61:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #CB4B03 | 4.54:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #CB4B03 text on white | 4.61:1 | AA | Lc 71.1 | Content text, not long reading |
| #CB4B03 text on black | 4.54:1 | AA | Lc -30.6 | 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
#F8E5DE
oklch(93.5% 0.023 41.4)
-
Step 200
200
#F4D0C3
oklch(88.5% 0.044 40.9)
-
Step 300
300
#EDB099
oklch(80.8% 0.079 41.6)
-
Step 400
400
#E28460
oklch(70.7% 0.126 41.5)
-
Step 500
500
#D7612F
oklch(63.1% 0.161 41.7)
-
Step 600
600 (this color)
#CB4B03
oklch(58% 0.175 41.5)
-
Step 700
700
#A33A00
oklch(49.2% 0.15 41.5)
-
Step 800
800
#862E00
oklch(42.6% 0.13 41.4)
-
Step 900
900
#6D290A
oklch(37.6% 0.105 41.6)
-
Step 950
950
#401909
oklch(26.9% 0.066 41.6)
#CB4B03 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) | #716300 | 0.170 |
| Deuteranopia (no green cones) | #908000 | 0.155 |
| Tritanopia (no blue cones) | #E02540 | 0.082 |
| Achromatopsia (no color) | #757575 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB4B03
#CB4B03
oklch(58% 0.175 41.5)
- #0088A7
#0088A7
oklch(58.1% 0.107 221.4)
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 #CB4B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.020
- Rust Orange #C45508 ΔE 0.021
- Burnt Orange #C04E01 ΔE 0.021
- Rusty Orange #CD5909 ΔE 0.028
- Deep Orange #DC4D01 ΔE 0.034
- Burnt Siena #B75203 ΔE 0.039
- Sinopia #BB3E03 ΔE 0.043
- Terra Cotta #C9643B ΔE 0.051
Use #CB4B03 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.