#C0301A
Closest named color: Sinopia (#BB3E03). oklch(53.3% 0.184 31.6), rgb(192, 48, 26).
Aa
White text reads best on this color (5.70:1).
About this color
#C0301A is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.184 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.027 away. White text reads best on it, at 5.70:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.67:1 |
| White text | 5.70:1 |
Values
| HEX | #C0301A |
| RGB | rgb(192, 48, 26) |
| HSL | hsl(8, 76%, 43%) |
| OKLCH | oklch(53.3% 0.184 31.6) |
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 #C0301A | 5.70:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #C0301A | 3.67:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #C0301A text on white | 5.70:1 | AA | Lc 77.1 | Fine for body text |
| #C0301A text on black | 3.67:1 | AA large text | Lc -24.7 | 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
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F6CFC7
oklch(88.6% 0.046 31.6)
-
Step 300
300
#F1ADA0
oklch(80.8% 0.083 31.1)
-
Step 400
400
#E77F6C
oklch(70.7% 0.132 31.5)
-
Step 500
500
#DD5943
oklch(63.1% 0.17 31.7)
-
Step 600
600 (this color)
#C0301A
oklch(53.3% 0.184 31.6)
-
Step 700
700
#AC2915
oklch(49% 0.17 31.6)
-
Step 800
800
#8C2415
oklch(42.6% 0.142 31.3)
-
Step 900
900
#712418
oklch(37.7% 0.111 31.5)
-
Step 950
950
#42170F
oklch(27% 0.069 32.4)
#C0301A 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) | #5D5215 | 0.195 |
| Deuteranopia (no green cones) | #807210 | 0.177 |
| Tritanopia (no blue cones) | #D4002D | 0.052 |
| Achromatopsia (no color) | #666666 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C0301A
#C0301A
oklch(53.3% 0.184 31.6)
- #007A8B
#007A8B
oklch(53.2% 0.092 211.6)
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 #C0301A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.027
- Dull Red #BB3F3F ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.036
- Firebrick #B22222 ΔE 0.040
- Scarlet #BE0119 ΔE 0.040
- Rufous #AE2012 ΔE 0.047
- Brick Orange #C14A09 ΔE 0.047
- Lipstick Red #C0022F ΔE 0.048
Use #C0301A 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.