#C33F2F
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.171 30.2), rgb(195, 63, 47).
Aa
White text reads best on this color (5.15:1).
About this color
#C33F2F is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.171 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.024 away. White text reads best on it, at 5.15:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #C33F2F |
| RGB | rgb(195, 63, 47) |
| HSL | hsl(6, 61%, 47%) |
| OKLCH | oklch(55.5% 0.171 30.2) |
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 #C33F2F | 5.15:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #C33F2F | 4.07:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #C33F2F text on white | 5.15:1 | AA | Lc 74.4 | Content text, not long reading |
| #C33F2F text on black | 4.07:1 | AA large text | Lc -27.3 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F4CFC9
oklch(88.4% 0.043 28.8)
-
Step 300
300
#EEAFA3
oklch(81% 0.076 31)
-
Step 400
400
#E38172
oklch(70.6% 0.124 29.7)
-
Step 500
500
#D85E4C
oklch(63.2% 0.157 30.5)
-
Step 600
600 (this color)
#C33F2F
oklch(55.5% 0.171 30.2)
-
Step 700
700
#A83022
oklch(49.1% 0.159 30.2)
-
Step 800
800
#89291E
oklch(42.7% 0.132 30)
-
Step 900
900
#6E271E
oklch(37.7% 0.103 29.9)
-
Step 950
950
#411812
oklch(27% 0.065 30.3)
#C33F2F 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) | #655B2C | 0.180 |
| Deuteranopia (no green cones) | #86782A | 0.164 |
| Tritanopia (no blue cones) | #D7153C | 0.059 |
| Achromatopsia (no color) | #6D6D6D | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C33F2F
#C33F2F
oklch(55.5% 0.171 30.2)
- #008292
#008292
oklch(55.6% 0.096 209.8)
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 #C33F2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.024
- Sinopia #BB3E03 ΔE 0.032
- Brick Orange #C14A09 ΔE 0.036
- Dusty Red #B9484E ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.044
- Faded Red #D3494E ΔE 0.049
- Dark Coral #CF524E ΔE 0.051
- Burnt Siena #B75203 ΔE 0.055
Use #C33F2F 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.