#CA0300
Closest named color: Scarlet (#BE0119). oklch(52.8% 0.215 29.4), rgb(202, 3, 0).
Aa
White text reads best on this color (5.95:1).
About this color
#CA0300 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.215 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.028 away. White text reads best on it, at 5.95:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.215) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #CA0300 |
| RGB | rgb(202, 3, 0) |
| HSL | hsl(1, 100%, 40%) |
| OKLCH | oklch(52.8% 0.215 29.4) |
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 #CA0300 | 5.95:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #CA0300 | 3.52:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #CA0300 text on white | 5.95:1 | AA | Lc 77.0 | Fine for body text |
| #CA0300 text on black | 3.52:1 | AA large text | Lc -24.8 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FCE3DF
oklch(93.5% 0.028 28.5)
-
Step 200
200
#FBCDC5
oklch(88.6% 0.054 29.6)
-
Step 300
300
#F9A99C
oklch(80.9% 0.097 29.5)
-
Step 400
400
#F27666
oklch(70.7% 0.156 29.1)
-
Step 500
500
#E94A3A
oklch(63.2% 0.198 29.4)
-
Step 600
600 (this color)
#CA0300
oklch(52.8% 0.215 29.4)
-
Step 700
700
#B70300
oklch(49% 0.2 29.4)
-
Step 800
800
#950F08
oklch(42.7% 0.166 29.4)
-
Step 900
900
#771A12
oklch(37.6% 0.129 29.4)
-
Step 950
950
#46120C
oklch(27% 0.081 29.8)
#CA0300 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) | #554A00 | 0.236 |
| Deuteranopia (no green cones) | #817100 | 0.207 |
| Tritanopia (no blue cones) | #DF000B | 0.044 |
| Achromatopsia (no color) | #646464 | 0.217 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA0300
#CA0300
oklch(52.8% 0.215 29.4)
- #007988
#007988
oklch(52.8% 0.091 209.8)
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 #CA0300, closest first.
No curated palette has a color within ΔE 0.04 of #CA0300.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.028
- Cherry #CF0234 ΔE 0.036
- Lipstick Red #C0022F ΔE 0.038
- Firebrick #B22222 ΔE 0.048
- Rose Red #BE013C ΔE 0.054
- Rufous #AE2012 ΔE 0.055
- Rusty Red #AF2F0D ΔE 0.056
- Crimson #DC143C ΔE 0.057
Use #CA0300 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.