#CA2900
Closest named color: Sinopia (#BB3E03). oklch(54.4% 0.2 33.1), rgb(202, 41, 0).
Aa
White text reads best on this color (5.48:1).
About this color
#CA2900 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.200 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.037 away. White text reads best on it, at 5.48:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #CA2900 |
| RGB | rgb(202, 41, 0) |
| HSL | hsl(12, 100%, 40%) |
| OKLCH | oklch(54.4% 0.2 33.1) |
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 #CA2900 | 5.48:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #CA2900 | 3.82:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #CA2900 text on white | 5.48:1 | AA | Lc 75.6 | Fine for body text |
| #CA2900 text on black | 3.82:1 | AA large text | Lc -26.1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F5AC9B
oklch(81% 0.09 33.6)
-
Step 400
400
#EC7B64
oklch(70.6% 0.144 32.8)
-
Step 500
500
#E35337
oklch(63.2% 0.184 33)
-
Step 600
600 (this color)
#CA2900
oklch(54.4% 0.2 33.1)
-
Step 700
700
#B02200
oklch(49.1% 0.181 33)
-
Step 800
800
#901D03
oklch(42.6% 0.154 33.2)
-
Step 900
900
#742010
oklch(37.7% 0.12 32.9)
-
Step 950
950
#44150B
oklch(27% 0.075 33.7)
#CA2900 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) | #5F5200 | 0.211 |
| Deuteranopia (no green cones) | #857600 | 0.190 |
| Tritanopia (no blue cones) | #DF0025 | 0.050 |
| Achromatopsia (no color) | #696969 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA2900
#CA2900
oklch(54.4% 0.2 33.1)
- #007E91
#007E91
oklch(54.5% 0.095 213)
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 #CA2900, closest first.
No curated palette has a color within ΔE 0.04 of #CA2900.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.037
- Scarlet #BE0119 ΔE 0.047
- Brick Orange #C14A09 ΔE 0.049
- Cherry #CF0234 ΔE 0.049
- Dull Red #BB3F3F ΔE 0.049
- Rusty Red #AF2F0D ΔE 0.053
- Lipstick Red #C0022F ΔE 0.055
- Firebrick #B22222 ΔE 0.056
Use #CA2900 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.