#C61521
Closest named color: Scarlet (#BE0119). oklch(52.7% 0.205 25.9), rgb(198, 21, 33).
Aa
White text reads best on this color (5.94:1).
About this color
#C61521 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.205 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.022 away. White text reads best on it, at 5.94:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #C61521 |
| RGB | rgb(198, 21, 33) |
| HSL | hsl(356, 81%, 43%) |
| OKLCH | oklch(52.7% 0.205 25.9) |
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 #C61521 | 5.94:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #C61521 | 3.53:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #C61521 text on white | 5.94:1 | AA | Lc 77.5 | Fine for body text |
| #C61521 text on black | 3.53:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F7AAA2
oklch(81% 0.092 25.9)
-
Step 400
400
#EE786F
oklch(70.6% 0.147 25.9)
-
Step 500
500
#E54E49
oklch(63.1% 0.188 25.9)
-
Step 600
600 (this color)
#C61521
oklch(52.7% 0.205 25.9)
-
Step 700
700
#B4131D
oklch(49.1% 0.19 26)
-
Step 800
800
#92161A
oklch(42.7% 0.158 26)
-
Step 900
900
#751D1C
oklch(37.7% 0.122 25.8)
-
Step 950
950
#451311
oklch(27% 0.077 26)
#C61521 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) | #554C1F | 0.225 |
| Deuteranopia (no green cones) | #7E7117 | 0.205 |
| Tritanopia (no blue cones) | #DB001D | 0.041 |
| Achromatopsia (no color) | #646464 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C61521
#C61521
oklch(52.7% 0.205 25.9)
- #007984
#007984
oklch(52.6% 0.09 205.9)
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 #C61521, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.022
- Lipstick Red #C0022F ΔE 0.025
- Cherry #CF0234 ΔE 0.027
- Firebrick #B22222 ΔE 0.039
- Rose Red #BE013C ΔE 0.040
- Ruby #CA0147 ΔE 0.046
- Dull Red #BB3F3F ΔE 0.048
- Rufous #AE2012 ΔE 0.050
Use #C61521 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.