#F3391D
Closest named color: Vermillion (#F4320C). oklch(63.1% 0.225 31.5), rgb(243, 57, 29).
Aa
Black text reads best on this color (5.41:1).
About this color
#F3391D is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.225 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.008 away. Black text reads best on it, at 5.41:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.225) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #F3391D |
| RGB | rgb(243, 57, 29) |
| HSL | hsl(8, 90%, 53%) |
| OKLCH | oklch(63.1% 0.225 31.5) |
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 #F3391D | 3.87:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #F3391D | 5.41:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #F3391D text on white | 3.87:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #F3391D text on black | 5.41:1 | AA | Lc -37.1 | 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
#FFE3DD
oklch(93.7% 0.032 32.1)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA695
oklch(80.9% 0.109 31.4)
-
Step 400
400
#FB6F57
oklch(70.8% 0.176 31.6)
-
Step 500
500 (this color)
#F3391D
oklch(63.1% 0.225 31.5)
-
Step 600
600
#D32000
oklch(55.5% 0.213 31.5)
-
Step 700
700
#B31A00
oklch(49.1% 0.188 31.6)
-
Step 800
800
#941300
oklch(42.7% 0.164 31.5)
-
Step 900
900
#7D0F00
oklch(37.8% 0.145 31.6)
-
Step 950
950
#4A0D05
oklch(27.1% 0.093 31.5)
#F3391D 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) | #756715 | 0.239 |
| Deuteranopia (no green cones) | #A2900A | 0.217 |
| Tritanopia (no blue cones) | #FF0036 | 0.046 |
| Achromatopsia (no color) | #818181 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F3391D
#F3391D
oklch(63.1% 0.225 31.5)
- #009AAF
#009AAF
oklch(63% 0.11 211.6)
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 #F3391D, closest first.
No curated palette has a color within ΔE 0.04 of #F3391D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.008
- Orangey Red #FA4224 ΔE 0.020
- Red Orange #FD3C06 ΔE 0.022
- Tomato Red #EC2D01 ΔE 0.022
- Orangered #FE420F ΔE 0.028
- Orange Red #FF4500 ΔE 0.034
- Fire Engine Red #FE0002 ΔE 0.034
- Red #FF0000 ΔE 0.034
Use #F3391D 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.