#CD3F04
Closest named color: Brick Orange (#C14A09). oklch(57% 0.187 37.4), rgb(205, 63, 4).
Aa
White text reads best on this color (4.87:1).
About this color
#CD3F04 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.187 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.027 away. White text reads best on it, at 4.87:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.187) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #CD3F04 |
| RGB | rgb(205, 63, 4) |
| HSL | hsl(18, 96%, 41%) |
| OKLCH | oklch(57% 0.187 37.4) |
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 #CD3F04 | 4.87:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #CD3F04 | 4.30:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #CD3F04 text on white | 4.87:1 | AA | Lc 72.5 | Content text, not long reading |
| #CD3F04 text on black | 4.30:1 | AA large text | Lc -29.2 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DE
oklch(93.6% 0.024 40.3)
-
Step 200
200
#F6CFC4
oklch(88.5% 0.047 36.3)
-
Step 300
300
#F1AE9A
oklch(80.9% 0.084 37.3)
-
Step 400
400
#E78061
oklch(70.7% 0.135 37.5)
-
Step 500
500
#DD5B32
oklch(63.2% 0.172 37.6)
-
Step 600
600 (this color)
#CD3F04
oklch(57% 0.187 37.4)
-
Step 700
700
#A93100
oklch(49.2% 0.163 37.3)
-
Step 800
800
#8B2700
oklch(42.7% 0.141 37.5)
-
Step 900
900
#71250C
oklch(37.7% 0.113 37.4)
-
Step 950
950
#42170A
oklch(26.9% 0.071 37.3)
#CD3F04 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) | #6A5D00 | 0.191 |
| Deuteranopia (no green cones) | #8D7D00 | 0.171 |
| Tritanopia (no blue cones) | #E20037 | 0.075 |
| Achromatopsia (no color) | #717171 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CD3F04
#CD3F04
oklch(57% 0.187 37.4)
- #00859F
#00859F
oklch(56.9% 0.102 218)
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 #CD3F04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.027
- Burnt Orange #C04E01 ΔE 0.033
- Sinopia #BB3E03 ΔE 0.036
- Rust Orange #C45508 ΔE 0.040
- Deep Orange #DC4D01 ΔE 0.042
- Rusty Orange #CD5909 ΔE 0.048
- Burnt Siena #B75203 ΔE 0.050
- Dull Red #BB3F3F ΔE 0.055
Use #CD3F04 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.