#C33815
Closest named color: Sinopia (#BB3E03). oklch(54.6% 0.181 34.4), rgb(195, 56, 21).
Aa
White text reads best on this color (5.38:1).
About this color
#C33815 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.181 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.020 away. White text reads best on it, at 5.38:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #C33815 |
| RGB | rgb(195, 56, 21) |
| HSL | hsl(12, 81%, 42%) |
| OKLCH | oklch(54.6% 0.181 34.4) |
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 #C33815 | 5.38:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #C33815 | 3.89:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #C33815 text on white | 5.38:1 | AA | Lc 75.6 | Fine for body text |
| #C33815 text on black | 3.89:1 | AA large text | Lc -26.2 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F5CFC6
oklch(88.4% 0.045 33.5)
-
Step 300
300
#F0AE9E
oklch(80.9% 0.081 34.1)
-
Step 400
400
#E68068
oklch(70.7% 0.131 34.2)
-
Step 500
500
#DB5B3E
oklch(63% 0.167 34.2)
-
Step 600
600 (this color)
#C33815
oklch(54.6% 0.181 34.4)
-
Step 700
700
#AB2C09
oklch(49.1% 0.168 34.5)
-
Step 800
800
#8B270E
oklch(42.7% 0.139 34.5)
-
Step 900
900
#702615
oklch(37.8% 0.109 34.3)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#C33815 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) | #62570D | 0.189 |
| Deuteranopia (no green cones) | #857608 | 0.171 |
| Tritanopia (no blue cones) | #D70032 | 0.063 |
| Achromatopsia (no color) | #6A6A6A | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C33815
#C33815
oklch(54.6% 0.181 34.4)
- #007E93
#007E93
oklch(54.6% 0.096 214.7)
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 #C33815, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.020
- Brick Orange #C14A09 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.042
- Rusty Red #AF2F0D ΔE 0.046
- Burnt Siena #B75203 ΔE 0.052
- Dusty Red #B9484E ΔE 0.054
- Firebrick #B22222 ΔE 0.054
Use #C33815 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.