#F33F07
Closest named color: Vermillion (#F4320C). oklch(63.5% 0.222 34.5), rgb(243, 63, 7).
Aa
Black text reads best on this color (5.52:1).
About this color
#F33F07 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.222 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.016 away. Black text reads best on it, at 5.52:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.222) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.52:1 |
| White text | 3.80:1 |
Values
| HEX | #F33F07 |
| RGB | rgb(243, 63, 7) |
| HSL | hsl(14, 94%, 49%) |
| OKLCH | oklch(63.5% 0.222 34.5) |
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 #F33F07 | 3.80:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #F33F07 | 5.52:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #F33F07 text on white | 3.80:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #F33F07 text on black | 5.52:1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DC
oklch(93.6% 0.031 34.9)
-
Step 200
200
#FECCBF
oklch(88.5% 0.06 35)
-
Step 300
300
#FEA791
oklch(80.9% 0.108 34.9)
-
Step 400
400
#F97151
oklch(70.7% 0.174 34.6)
-
Step 500
500 (this color)
#F33F07
oklch(63.5% 0.222 34.5)
-
Step 600
600
#CD3200
oklch(55.7% 0.197 34.6)
-
Step 700
700
#AD2800
oklch(49% 0.174 34.5)
-
Step 800
800
#8F2000
oklch(42.7% 0.151 34.7)
-
Step 900
900
#791900
oklch(37.8% 0.134 34.5)
-
Step 950
950
#490E02
oklch(26.9% 0.091 34.5)
#F33F07 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) | #786900 | 0.233 |
| Deuteranopia (no green cones) | #A49100 | 0.208 |
| Tritanopia (no blue cones) | #FF0038 | 0.059 |
| Achromatopsia (no color) | #838383 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F33F07
#F33F07
oklch(63.5% 0.222 34.5)
- #009BB4
#009BB4
oklch(63.4% 0.112 214.5)
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 #F33F07, closest first.
No curated palette has a color within ΔE 0.04 of #F33F07.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.016
- Red Orange #FD3C06 ΔE 0.019
- Orangey Red #FA4224 ΔE 0.019
- Orangered #FE420F ΔE 0.023
- Orange Red #FF4500 ΔE 0.027
- Tomato Red #EC2D01 ΔE 0.028
- Blood Orange #FE4B03 ΔE 0.030
- Orange Pant #FB5607 ΔE 0.041
Use #F33F07 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.