#F33D33
Closest named color: Orangey Red (#FA4224). oklch(63.5% 0.219 28.4), rgb(243, 61, 51).
Aa
Black text reads best on this color (5.52:1).
About this color
#F33D33 is a medium-light, vivid red. In OKLCH its lightness is 64%, its chroma 0.219 and its hue 28°. 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 5.52:1.
| Hue family | Reds |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.219) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.52:1 |
| White text | 3.80:1 |
Values
| HEX | #F33D33 |
| RGB | rgb(243, 61, 51) |
| HSL | hsl(3, 89%, 58%) |
| OKLCH | oklch(63.5% 0.219 28.4) |
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 #F33D33 | 3.80:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #F33D33 | 5.52:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #F33D33 text on white | 3.80:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #F33D33 text on black | 5.52:1 | AA | Lc -37.7 | 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
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FECBC3
oklch(88.5% 0.059 28.6)
-
Step 300
300
#FEA699
oklch(80.9% 0.107 28.8)
-
Step 400
400
#F96F61
oklch(70.6% 0.172 28.1)
-
Step 500
500 (this color)
#F33D33
oklch(63.5% 0.219 28.4)
-
Step 600
600
#D9000B
oklch(55.6% 0.228 28.4)
-
Step 700
700
#B80008
oklch(49.2% 0.201 28.3)
-
Step 800
800
#980005
oklch(42.7% 0.175 28.4)
-
Step 900
900
#7C0F0C
oklch(37.7% 0.143 28.4)
-
Step 950
950
#490D0A
oklch(26.9% 0.09 27.9)
#F33D33 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) | #756930 | 0.236 |
| Deuteranopia (no green cones) | #A2912A | 0.214 |
| Tritanopia (no blue cones) | #FF003D | 0.045 |
| Achromatopsia (no color) | #838383 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F33D33
#F33D33
oklch(63.5% 0.219 28.4)
- #009DAE
#009DAE
oklch(63.7% 0.11 208.3)
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 #F33D33, 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 0.021
- Red Orange #FD3C06 ΔE 0.029
- Strawberry #FB2943 ΔE 0.031
- Tomato Red #EC2D01 ΔE 0.032
- Orangered #FE420F ΔE 0.032
- Imperial Red #E63946 ΔE 0.034
- Red Pantone #EF233C ΔE 0.035
Use #F33D33 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.