#CB243E
Closest named color: Cherry (#CF0234). oklch(54.8% 0.199 19.6), rgb(203, 36, 62).
Aa
White text reads best on this color (5.43:1).
About this color
#CB243E is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.199 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Cherry (#CF0234), ΔE 0.019 away. White text reads best on it, at 5.43:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.199) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #CB243E |
| RGB | rgb(203, 36, 62) |
| HSL | hsl(351, 70%, 47%) |
| OKLCH | oklch(54.8% 0.199 19.6) |
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 #CB243E | 5.43:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #CB243E | 3.86:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #CB243E text on white | 5.43:1 | AA | Lc 75.4 | Fine for body text |
| #CB243E text on black | 3.86:1 | AA large text | Lc -26.4 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E3
oklch(93.5% 0.026 17.6)
-
Step 200
200
#F9CDCC
oklch(88.6% 0.05 19.7)
-
Step 300
300
#F5AAA9
oklch(81% 0.089 20)
-
Step 400
400
#EC787C
oklch(70.6% 0.143 19.3)
-
Step 500
500
#E34F5A
oklch(63.2% 0.183 19.9)
-
Step 600
600 (this color)
#CB243E
oklch(54.8% 0.199 19.6)
-
Step 700
700
#B21632
oklch(49.2% 0.186 19.7)
-
Step 800
800
#90182A
oklch(42.6% 0.153 19.6)
-
Step 900
900
#741E26
oklch(37.8% 0.119 20)
-
Step 950
950
#441317
oklch(26.9% 0.075 19)
#CB243E 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) | #59533E | 0.220 |
| Deuteranopia (no green cones) | #827639 | 0.201 |
| Tritanopia (no blue cones) | #DF0030 | 0.040 |
| Achromatopsia (no color) | #6A6A6A | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB243E
#CB243E
oklch(54.8% 0.199 19.6)
- #008186
#008186
oklch(54.8% 0.093 199.6)
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 #CB243E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.019
- Ruby #CA0147 ΔE 0.029
- Lipstick #D5174E ΔE 0.030
- Crimson #DC143C ΔE 0.033
- Lipstick Red #C0022F ΔE 0.037
- Rose Red #BE013C ΔE 0.041
- Dull Red #BB3F3F ΔE 0.042
- Scarlet #BE0119 ΔE 0.049
Use #CB243E 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.