#CB0048
Closest named color: Ruby (#CA0147). oklch(53.6% 0.214 13.3), rgb(203, 0, 72).
Aa
White text reads best on this color (5.78:1).
About this color
#CB0048 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.214 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.002 away. White text reads best on it, at 5.78:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #CB0048 |
| RGB | rgb(203, 0, 72) |
| HSL | hsl(339, 100%, 40%) |
| OKLCH | oklch(53.6% 0.214 13.3) |
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 #CB0048 | 5.78:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #CB0048 | 3.63:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #CB0048 text on white | 5.78:1 | AA | Lc 76.2 | Fine for body text |
| #CB0048 text on black | 3.63:1 | AA large text | Lc -25.5 | 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
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FCE3E4
oklch(93.6% 0.028 14.9)
-
Step 200
200
#FACBCF
oklch(88.4% 0.054 12.5)
-
Step 300
300
#F8A7AF
oklch(80.9% 0.096 12.9)
-
Step 400
400
#F07384
oklch(70.6% 0.154 13.4)
-
Step 500
500
#E74666
oklch(63.2% 0.197 13.4)
-
Step 600
600 (this color)
#CB0048
oklch(53.6% 0.214 13.3)
-
Step 700
700
#B4003F
oklch(49% 0.196 13.2)
-
Step 800
800
#930A34
oklch(42.7% 0.165 13.1)
-
Step 900
900
#76172D
oklch(37.6% 0.129 13.2)
-
Step 950
950
#46101B
oklch(27% 0.082 12.7)
#CB0048 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) | #4F4D49 | 0.242 |
| Deuteranopia (no green cones) | #7D7343 | 0.219 |
| Tritanopia (no blue cones) | #DF0029 | 0.056 |
| Achromatopsia (no color) | #666666 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB0048
#CB0048
oklch(53.6% 0.214 13.3)
- #007E7C
#007E7C
oklch(53.6% 0.092 192.8)
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 #CB0048, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.002
- Lipstick #D5174E ΔE 0.026
- Cherry #CF0234 ΔE 0.027
- Rose Red #BE013C ΔE 0.031
- Lipstick Red #C0022F ΔE 0.038
- Crimson #DC143C ΔE 0.044
- Dark Hot Pink #D90166 ΔE 0.049
- Cerise #DE0C62 ΔE 0.052
Use #CB0048 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.