#F33800
Closest named color: Vermillion (#F4320C). oklch(62.9% 0.227 33.8), rgb(243, 56, 0).
Aa
Black text reads best on this color (5.37:1).
About this color
#F33800 is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.227 and its hue 34°. 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 5.37:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.227) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #F33800 |
| RGB | rgb(243, 56, 0) |
| HSL | hsl(14, 100%, 48%) |
| OKLCH | oklch(62.9% 0.227 33.8) |
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 #F33800 | 3.90:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #F33800 | 5.37:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #F33800 text on white | 3.90:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #F33800 text on black | 5.37:1 | AA | Lc -37.0 | 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
#FFE3DC
oklch(93.7% 0.032 34.3)
-
Step 200
200
#FFCBBF
oklch(88.5% 0.062 33.2)
-
Step 300
300
#FFA692
oklch(80.8% 0.11 33.3)
-
Step 400
400
#FB6F51
oklch(70.7% 0.178 33.6)
-
Step 500
500 (this color)
#F33800
oklch(62.9% 0.227 33.8)
-
Step 600
600
#CE2E00
oklch(55.5% 0.201 33.8)
-
Step 700
700
#AF2500
oklch(49.1% 0.178 33.7)
-
Step 800
800
#901D00
oklch(42.6% 0.154 33.8)
-
Step 900
900
#7A1700
oklch(37.8% 0.137 33.8)
-
Step 950
950
#4A0D02
oklch(27% 0.093 33.8)
#F33800 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) | #756600 | 0.239 |
| Deuteranopia (no green cones) | #A29000 | 0.215 |
| Tritanopia (no blue cones) | #FF0032 | 0.050 |
| Achromatopsia (no color) | #818181 | 0.229 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F33800
#F33800
oklch(62.9% 0.227 33.8)
- #0099B1
#0099B1
oklch(62.8% 0.11 214)
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 #F33800, closest first.
No curated palette has a color within ΔE 0.04 of #F33800.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.008
- Tomato Red #EC2D01 ΔE 0.021
- Red Orange #FD3C06 ΔE 0.021
- Orangey Red #FA4224 ΔE 0.023
- Orangered #FE420F ΔE 0.028
- Orange Red #FF4500 ΔE 0.032
- Fire Engine Red #FE0002 ΔE 0.035
- Red #FF0000 ΔE 0.036
Use #F33800 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.