#CF3400
Closest named color: Sinopia (#BB3E03). oklch(56.2% 0.198 34.9), rgb(207, 52, 0).
Aa
White text reads best on this color (5.06:1).
About this color
#CF3400 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.198 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.039 away. White text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #CF3400 |
| RGB | rgb(207, 52, 0) |
| HSL | hsl(15, 100%, 41%) |
| OKLCH | oklch(56.2% 0.198 34.9) |
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 #CF3400 | 5.06:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #CF3400 | 4.14:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #CF3400 text on white | 5.06:1 | AA | Lc 73.4 | Content text, not long reading |
| #CF3400 text on black | 4.14:1 | AA large text | Lc -28.3 | 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
#FAE4DE
oklch(93.5% 0.026 35.7)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F4AC9A
oklch(80.8% 0.089 34.6)
-
Step 400
400
#EB7D61
oklch(70.7% 0.142 35.3)
-
Step 500
500
#E15533
oklch(63.1% 0.181 34.8)
-
Step 600
600 (this color)
#CF3400
oklch(56.2% 0.198 34.9)
-
Step 700
700
#AD2A00
oklch(49.2% 0.173 35)
-
Step 800
800
#8F2100
oklch(42.8% 0.15 35)
-
Step 900
900
#73220D
oklch(37.7% 0.118 35.1)
-
Step 950
950
#44150A
oklch(27% 0.075 34.5)
#CF3400 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) | #655800 | 0.206 |
| Deuteranopia (no green cones) | #8B7B00 | 0.184 |
| Tritanopia (no blue cones) | #E5002D | 0.060 |
| Achromatopsia (no color) | #6E6E6E | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF3400
#CF3400
oklch(56.2% 0.198 34.9)
- #008399
#008399
oklch(56.1% 0.099 215)
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 #CF3400, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.039
- Brick Orange #C14A09 ΔE 0.039
- Burnt Orange #C04E01 ΔE 0.047
- Deep Orange #DC4D01 ΔE 0.052
- Dull Red #BB3F3F ΔE 0.053
- Rust Orange #C45508 ΔE 0.056
- Tomato Red #EC2D01 ΔE 0.056
- Cherry #CF0234 ΔE 0.060
Use #CF3400 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.