#F66555
Closest named color: Tomato (#FF6347). oklch(68.7% 0.181 28.9), rgb(246, 101, 85).
Aa
Black text reads best on this color (6.91:1).
About this color
#F66555 is a medium-light, vivid red. In OKLCH its lightness is 69%, its chroma 0.181 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato (#FF6347), ΔE 0.020 away. Black text reads best on it, at 6.91:1.
| Hue family | Reds |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Tomato (#FF6347) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #F66555 |
| RGB | rgb(246, 101, 85) |
| HSL | hsl(6, 90%, 65%) |
| OKLCH | oklch(68.7% 0.181 28.9) |
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 #F66555 | 3.03:1 | AA large text | Lc -61.7 | Content text, not long reading |
| Black text on #F66555 | 6.91:1 | AA | Lc 47.7 | Large or bold text, headings |
| #F66555 text on white | 3.03:1 | AA large text | Lc 56.4 | Large or bold text, headings |
| #F66555 text on black | 6.91:1 | AA | Lc -45.4 | Large or bold text, headings |
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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE2DE
oklch(93.5% 0.033 27.1)
-
Step 200
200
#FFCBC2
oklch(88.5% 0.061 29.7)
-
Step 300
300
#FFA698
oklch(81% 0.108 29.4)
-
Step 400
400 (this color)
#F66555
oklch(68.7% 0.181 28.9)
-
Step 500
500
#F63127
oklch(63.1% 0.232 28.8)
-
Step 600
600
#D90004
oklch(55.6% 0.228 28.9)
-
Step 700
700
#B80003
oklch(49.2% 0.201 28.9)
-
Step 800
800
#980002
oklch(42.7% 0.175 28.9)
-
Step 900
900
#7F0504
oklch(37.7% 0.151 28.9)
-
Step 950
950
#4B0A07
oklch(27% 0.096 28.5)
#F66555 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) | #8B8053 | 0.189 |
| Deuteranopia (no green cones) | #AFA051 | 0.175 |
| Tritanopia (no blue cones) | #FF4762 | 0.057 |
| Achromatopsia (no color) | #949494 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F66555
#F66555
oklch(68.7% 0.181 28.9)
- #00AEC1
#00AEC1
oklch(68.7% 0.118 208.5)
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 #F66555, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato #FF6347 ΔE 0.020
- Grapefruit #FD5956 ΔE 0.023
- Coral Pink #FF6163 ΔE 0.025
- Orange Pink #FF6F52 ΔE 0.029
- Burnt Sienna #E76F51 ΔE 0.032
- Pinkish Orange #FF724C ΔE 0.037
- Melon #FF7855 ΔE 0.045
- Light Red #FF474C ΔE 0.046
Use #F66555 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.