#C03F2C
Closest named color: Dull Red (#BB3F3F). oklch(55% 0.168 31.2), rgb(192, 63, 44).
Aa
White text reads best on this color (5.26:1).
About this color
#C03F2C is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.168 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.023 away. White text reads best on it, at 5.26:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.168) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #C03F2C |
| RGB | rgb(192, 63, 44) |
| HSL | hsl(8, 63%, 46%) |
| OKLCH | oklch(55% 0.168 31.2) |
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 #C03F2C | 5.26:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #C03F2C | 3.98:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #C03F2C text on white | 5.26:1 | AA | Lc 75.1 | Fine for body text |
| #C03F2C text on black | 3.98:1 | AA large text | Lc -26.6 | 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
#F4D0C8
oklch(88.6% 0.042 32.6)
-
Step 300
300
#EDAFA3
oklch(80.9% 0.075 31.1)
-
Step 400
400
#E28271
oklch(70.7% 0.122 31)
-
Step 500
500
#D75F4B
oklch(63.1% 0.155 31.4)
-
Step 600
600 (this color)
#C03F2C
oklch(55% 0.168 31.2)
-
Step 700
700
#A73221
oklch(49.1% 0.156 31.3)
-
Step 800
800
#882B1D
oklch(42.8% 0.13 31.3)
-
Step 900
900
#6D281D
oklch(37.6% 0.101 31.3)
-
Step 950
950
#401812
oklch(26.9% 0.064 30.5)
#C03F2C 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) | #645A29 | 0.176 |
| Deuteranopia (no green cones) | #847627 | 0.161 |
| Tritanopia (no blue cones) | #D3173C | 0.059 |
| Achromatopsia (no color) | #6C6C6C | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C03F2C
#C03F2C
oklch(55% 0.168 31.2)
- #008091
#008091
oklch(55% 0.095 210.9)
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 #C03F2C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.023
- Sinopia #BB3E03 ΔE 0.026
- Brick Orange #C14A09 ΔE 0.034
- Dusty Red #B9484E ΔE 0.038
- Burnt Orange #C04E01 ΔE 0.043
- Rusty Red #AF2F0D ΔE 0.050
- Burnt Siena #B75203 ΔE 0.051
- Rust Orange #C45508 ΔE 0.055
Use #C03F2C 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.