#C6033B
Closest named color: Ruby (#CA0147). oklch(52.5% 0.209 17.3), rgb(198, 3, 59).
Aa
White text reads best on this color (6.03:1).
About this color
#C6033B is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.209 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.017 away. White text reads best on it, at 6.03:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.209) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.47:1 |
| White text | 6.03:1 |
Values
| HEX | #C6033B |
| RGB | rgb(198, 3, 59) |
| HSL | hsl(343, 97%, 39%) |
| OKLCH | oklch(52.5% 0.209 17.3) |
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 #C6033B | 6.03:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #C6033B | 3.47:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #C6033B text on white | 6.03:1 | AA | Lc 77.6 | Fine for body text |
| #C6033B text on black | 3.47:1 | AA large text | Lc -24.2 | 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
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FACCCD
oklch(88.5% 0.052 16.7)
-
Step 300
300
#F7A8AA
oklch(80.9% 0.094 17.7)
-
Step 400
400
#EF757E
oklch(70.7% 0.15 17.1)
-
Step 500
500
#E6495D
oklch(63.1% 0.192 17.4)
-
Step 600
600 (this color)
#C6033B
oklch(52.5% 0.209 17.3)
-
Step 700
700
#B50535
oklch(49.2% 0.195 17.6)
-
Step 800
800
#93102D
oklch(42.8% 0.161 17.2)
-
Step 900
900
#761A28
oklch(37.8% 0.125 17.5)
-
Step 950
950
#451118
oklch(26.9% 0.079 16.5)
#C6033B 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) | #4F4B3B | 0.234 |
| Deuteranopia (no green cones) | #7B7035 | 0.213 |
| Tritanopia (no blue cones) | #DA0023 | 0.049 |
| Achromatopsia (no color) | #636363 | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C6033B
#C6033B
oklch(52.5% 0.209 17.3)
- #007A7C
#007A7C
oklch(52.5% 0.089 196.8)
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 #C6033B, closest first.
No curated palette has a color within ΔE 0.04 of #C6033B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.017
- Rose Red #BE013C ΔE 0.018
- Lipstick Red #C0022F ΔE 0.018
- Cherry #CF0234 ΔE 0.021
- Scarlet #BE0119 ΔE 0.037
- Lipstick #D5174E ΔE 0.040
- Crimson #DC143C ΔE 0.049
- Firebrick #B22222 ΔE 0.052
Use #C6033B 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.