#C64403
Closest named color: Brick Orange (#C14A09). oklch(56.3% 0.176 39.8), rgb(198, 68, 3).
Aa
White text reads best on this color (4.96:1).
About this color
#C64403 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.176 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.013 away. White text reads best on it, at 4.96:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #C64403 |
| RGB | rgb(198, 68, 3) |
| HSL | hsl(20, 97%, 39%) |
| OKLCH | oklch(56.3% 0.176 39.8) |
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 #C64403 | 4.96:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #C64403 | 4.22:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #C64403 text on white | 4.96:1 | AA | Lc 73.3 | Content text, not long reading |
| #C64403 text on black | 4.22:1 | AA large text | Lc -28.4 | Dividers and decoration only |
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
#F4D0C4
oklch(88.5% 0.044 39.3)
-
Step 300
300
#EEB09A
oklch(80.9% 0.079 40.4)
-
Step 400
400
#E38362
oklch(70.7% 0.127 39.6)
-
Step 500
500
#D86034
oklch(63.1% 0.162 39.7)
-
Step 600
600 (this color)
#C64403
oklch(56.3% 0.176 39.8)
-
Step 700
700
#A53600
oklch(49% 0.155 39.6)
-
Step 800
800
#882C00
oklch(42.7% 0.134 40.1)
-
Step 900
900
#6E290D
oklch(37.8% 0.105 40.3)
-
Step 950
950
#41190A
oklch(27.1% 0.067 40.2)
#C64403 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) | #6B5D00 | 0.174 |
| Deuteranopia (no green cones) | #8B7B00 | 0.158 |
| Tritanopia (no blue cones) | #DA193A | 0.077 |
| Achromatopsia (no color) | #707070 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C64403
#C64403
oklch(56.3% 0.176 39.8)
- #00839F
#00839F
oklch(56.4% 0.103 219.8)
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 #C64403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.013
- Burnt Orange #C04E01 ΔE 0.020
- Sinopia #BB3E03 ΔE 0.026
- Rust Orange #C45508 ΔE 0.032
- Burnt Siena #B75203 ΔE 0.036
- Rusty Orange #CD5909 ΔE 0.045
- Deep Orange #DC4D01 ΔE 0.049
- Cinnamon #AC4F06 ΔE 0.051
Use #C64403 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.