#F66A38
Closest named color: Tomato (#FF6347). oklch(69% 0.184 39.2), rgb(246, 106, 56).
Aa
Black text reads best on this color (7.03:1).
About this color
#F66A38 is a medium-light, vivid red. In OKLCH its lightness is 69%, its chroma 0.184 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato (#FF6347), ΔE 0.026 away. Black text reads best on it, at 7.03:1.
| Hue family | Reds |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Tomato (#FF6347) |
| Black text | 7.03:1 |
| White text | 2.98:1 |
Values
| HEX | #F66A38 |
| RGB | rgb(246, 106, 56) |
| HSL | hsl(16, 91%, 59%) |
| OKLCH | oklch(69% 0.184 39.2) |
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 #F66A38 | 2.98:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #F66A38 | 7.03:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #F66A38 text on white | 2.98:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #F66A38 text on black | 7.03:1 | AAA | Lc -46.1 | 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FFE3DA
oklch(93.6% 0.033 38.6)
-
Step 200
200
#FFCCBB
oklch(88.5% 0.063 39.2)
-
Step 300
300
#FFA78A
oklch(80.9% 0.112 39)
-
Step 400
400 (this color)
#F66A38
oklch(69% 0.184 39.2)
-
Step 500
500
#E84E00
oklch(63.1% 0.201 39.2)
-
Step 600
600
#C44000
oklch(55.5% 0.178 39)
-
Step 700
700
#A63500
oklch(49.1% 0.157 39.1)
-
Step 800
800
#892A00
oklch(42.6% 0.137 39)
-
Step 900
900
#732200
oklch(37.6% 0.12 39.1)
-
Step 950
950
#471200
oklch(27% 0.086 39.4)
#F66A38 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) | #918231 | 0.180 |
| Deuteranopia (no green cones) | #B3A133 | 0.165 |
| Tritanopia (no blue cones) | #FF4A60 | 0.080 |
| Achromatopsia (no color) | #959595 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F66A38
#F66A38
oklch(69% 0.184 39.2)
- #00ADD0
#00ADD0
oklch(69.1% 0.125 219.2)
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 #F66A38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato #FF6347 ΔE 0.026
- Pinkish Orange #FF724C ΔE 0.028
- Orange Pink #FF6F52 ΔE 0.030
- Bright Orange #FF5B00 ΔE 0.030
- Burnt Sienna #E76F51 ΔE 0.032
- Orange Pant #FB5607 ΔE 0.035
- Melon #FF7855 ΔE 0.039
- Coral #FF7F50 ΔE 0.048
Use #F66A38 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.