#F83321
Closest named color: Vermillion (#F4320C). oklch(63.5% 0.233 30), rgb(248, 51, 33).
Aa
Black text reads best on this color (5.48:1).
About this color
#F83321 is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.233 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.012 away. Black text reads best on it, at 5.48:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.233) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.48:1 |
| White text | 3.82:1 |
Values
| HEX | #F83321 |
| RGB | rgb(248, 51, 33) |
| HSL | hsl(5, 94%, 55%) |
| OKLCH | oklch(63.5% 0.233 30) |
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 #F83321 | 3.82:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #F83321 | 5.48:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #F83321 text on white | 3.82:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #F83321 text on black | 5.48:1 | AA | Lc -37.8 | 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
#FFE2DD
oklch(93.5% 0.033 29.4)
-
Step 200
200
#FFCBC2
oklch(88.5% 0.061 29.7)
-
Step 300
300
#FFA697
oklch(81% 0.108 30.1)
-
Step 400
400
#FD6C58
oklch(70.7% 0.181 30.1)
-
Step 500
500 (this color)
#F83321
oklch(63.5% 0.233 30)
-
Step 600
600
#D71000
oklch(55.6% 0.223 30)
-
Step 700
700
#B60C00
oklch(49.1% 0.197 30)
-
Step 800
800
#970800
oklch(42.8% 0.171 30)
-
Step 900
900
#7F0500
oklch(37.7% 0.151 30)
-
Step 950
950
#4B0A05
oklch(27% 0.096 29.9)
#F83321 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) | #74671B | 0.250 |
| Deuteranopia (no green cones) | #A49210 | 0.227 |
| Tritanopia (no blue cones) | #FF0032 | 0.035 |
| Achromatopsia (no color) | #828282 | 0.234 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F83321
#F83321
oklch(63.5% 0.233 30)
- #009CAF
#009CAF
oklch(63.5% 0.11 209.9)
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 #F83321, closest first.
No curated palette has a color within ΔE 0.04 of #F83321.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.012
- Orangey Red #FA4224 ΔE 0.019
- Red Orange #FD3C06 ΔE 0.021
- Fire Engine Red #FE0002 ΔE 0.026
- Red #FF0000 ΔE 0.026
- Bright Red #FF000D ΔE 0.026
- Orangered #FE420F ΔE 0.027
- Tomato Red #EC2D01 ΔE 0.029
Use #F83321 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.