#CB0523
Closest named color: Cherry (#CF0234). oklch(53.2% 0.214 24.7), rgb(203, 5, 35).
Aa
White text reads best on this color (5.85:1).
About this color
#CB0523 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.214 and its hue 25°. 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 5.85:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #CB0523 |
| RGB | rgb(203, 5, 35) |
| HSL | hsl(351, 95%, 41%) |
| OKLCH | oklch(53.2% 0.214 24.7) |
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 #CB0523 | 5.85:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #CB0523 | 3.58:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #CB0523 text on white | 5.85:1 | AA | Lc 76.7 | Fine for body text |
| #CB0523 text on black | 3.58:1 | AA large text | Lc -25.1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F9A8A2
oklch(80.9% 0.097 24.1)
-
Step 400
400
#F1756F
oklch(70.6% 0.154 24.6)
-
Step 500
500
#E84949
oklch(63.1% 0.196 24.7)
-
Step 600
600 (this color)
#CB0523
oklch(53.2% 0.214 24.7)
-
Step 700
700
#B7001E
oklch(49.1% 0.199 24.5)
-
Step 800
800
#940E1B
oklch(42.6% 0.164 24.5)
-
Step 900
900
#77191C
oklch(37.6% 0.128 24.4)
-
Step 950
950
#461111
oklch(26.9% 0.081 24.4)
#CB0523 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) | #544B21 | 0.237 |
| Deuteranopia (no green cones) | #807218 | 0.213 |
| Tritanopia (no blue cones) | #E00018 | 0.044 |
| Achromatopsia (no color) | #656565 | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB0523
#CB0523
oklch(53.2% 0.214 24.7)
- #007B85
#007B85
oklch(53.2% 0.091 204.8)
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 #CB0523, closest first.
No curated palette has a color within ΔE 0.04 of #CB0523.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.019
- Lipstick Red #C0022F ΔE 0.027
- Scarlet #BE0119 ΔE 0.029
- Rose Red #BE013C ΔE 0.040
- Ruby #CA0147 ΔE 0.041
- Crimson #DC143C ΔE 0.044
- Firebrick #B22222 ΔE 0.049
- Lipstick #D5174E ΔE 0.051
Use #CB0523 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.