#F3664C
Closest named color: Tomato (#FF6347). oklch(68.3% 0.179 32.4), rgb(243, 102, 76).
Aa
Black text reads best on this color (6.81:1).
About this color
#F3664C is a medium-light, vivid red. In OKLCH its lightness is 68%, its chroma 0.179 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato (#FF6347), ΔE 0.021 away. Black text reads best on it, at 6.81:1.
| Hue family | Reds |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Tomato (#FF6347) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #F3664C |
| RGB | rgb(243, 102, 76) |
| HSL | hsl(9, 87%, 63%) |
| OKLCH | oklch(68.3% 0.179 32.4) |
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 #F3664C | 3.08:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #F3664C | 6.81:1 | AA | Lc 47.1 | Large or bold text, headings |
| #F3664C text on white | 3.08:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #F3664C text on black | 6.81:1 | AA | Lc -44.8 | 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 400.
-
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
#FFCBC0
oklch(88.5% 0.061 32.1)
-
Step 300
300
#FFA694
oklch(80.9% 0.109 32)
-
Step 400
400 (this color)
#F3664C
oklch(68.3% 0.179 32.4)
-
Step 500
500
#F53711
oklch(63.2% 0.229 32.4)
-
Step 600
600
#D12600
oklch(55.5% 0.208 32.3)
-
Step 700
700
#B11F00
oklch(49.1% 0.184 32.4)
-
Step 800
800
#931800
oklch(42.8% 0.16 32.4)
-
Step 900
900
#7B1200
oklch(37.6% 0.141 32.3)
-
Step 950
950
#4A0C03
oklch(26.9% 0.094 32.4)
#F3664C 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) | #8C8049 | 0.183 |
| Deuteranopia (no green cones) | #AF9E48 | 0.168 |
| Tritanopia (no blue cones) | #FF4860 | 0.063 |
| Achromatopsia (no color) | #939393 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F3664C
#F3664C
oklch(68.3% 0.179 32.4)
- #00ACC4
#00ACC4
oklch(68.3% 0.119 212.1)
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 #F3664C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato #FF6347 ΔE 0.021
- Burnt Sienna #E76F51 ΔE 0.025
- Orange Pink #FF6F52 ΔE 0.031
- Grapefruit #FD5956 ΔE 0.032
- Pinkish Orange #FF724C ΔE 0.036
- Coral Pink #FF6163 ΔE 0.037
- Orange Pant #FB5607 ΔE 0.042
- Bright Orange #FF5B00 ΔE 0.043
Use #F3664C 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.