#F63C37
Closest named color: Orangey Red (#FA4224). oklch(64% 0.222 27.3), rgb(246, 60, 55).
Aa
Black text reads best on this color (5.62:1).
About this color
#F63C37 is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.222 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.021 away. Black text reads best on it, at 5.62:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.222) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #F63C37 |
| RGB | rgb(246, 60, 55) |
| HSL | hsl(2, 91%, 59%) |
| OKLCH | oklch(64% 0.222 27.3) |
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 #F63C37 | 3.73:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #F63C37 | 5.62:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #F63C37 text on white | 3.73:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #F63C37 text on black | 5.62:1 | AA | Lc -38.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE2DF
oklch(93.5% 0.031 25)
-
Step 200
200
#FFCBC4
oklch(88.6% 0.06 27.2)
-
Step 300
300
#FFA59A
oklch(80.9% 0.109 27.3)
-
Step 400
400
#FA6E62
oklch(70.7% 0.174 27.3)
-
Step 500
500 (this color)
#F63C37
oklch(64% 0.222 27.3)
-
Step 600
600
#D90015
oklch(55.7% 0.227 27.3)
-
Step 700
700
#B70010
oklch(49% 0.2 27.3)
-
Step 800
800
#98000B
oklch(42.7% 0.174 27.3)
-
Step 900
900
#7D0C0E
oklch(37.7% 0.145 27.3)
-
Step 950
950
#4A0C0A
oklch(27% 0.092 27.4)
#F63C37 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) | #766A34 | 0.239 |
| Deuteranopia (no green cones) | #A3932F | 0.220 |
| Tritanopia (no blue cones) | #FF003D | 0.041 |
| Achromatopsia (no color) | #848484 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F63C37
#F63C37
oklch(64% 0.222 27.3)
- #009EAE
#009EAE
oklch(63.9% 0.11 207.4)
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 #F63C37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.021
- Vermillion #F4320C ΔE 0.025
- Strawberry #FB2943 ΔE 0.026
- Red Orange #FD3C06 ΔE 0.029
- Light Red #FF474C ΔE 0.030
- Pinky Red #FC2647 ΔE 0.032
- Orangered #FE420F ΔE 0.032
- Red Pantone #EF233C ΔE 0.035
Use #F63C37 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.