#F66B38
Closest named color: Pinkish Orange (#FF724C). oklch(69.1% 0.183 39.5), rgb(246, 107, 56).
Aa
Black text reads best on this color (7.07:1).
About this color
#F66B38 is a medium-light, vivid red. In OKLCH its lightness is 69%, its chroma 0.183 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Pinkish Orange (#FF724C), ΔE 0.027 away. Black text reads best on it, at 7.07:1.
| Hue family | Reds |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Pinkish Orange (#FF724C) |
| Black text | 7.07:1 |
| White text | 2.96:1 |
Values
| HEX | #F66B38 |
| RGB | rgb(246, 107, 56) |
| HSL | hsl(16, 91%, 59%) |
| OKLCH | oklch(69.1% 0.183 39.5) |
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 #F66B38 | 2.96:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #F66B38 | 7.07:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #F66B38 text on white | 2.96:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #F66B38 text on black | 7.07:1 | AAA | Lc -46.3 | 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
#FFA789
oklch(80.8% 0.113 39.6)
-
Step 400
400 (this color)
#F66B38
oklch(69.1% 0.183 39.5)
-
Step 500
500
#E74F00
oklch(63% 0.2 39.6)
-
Step 600
600
#C34100
oklch(55.5% 0.176 39.5)
-
Step 700
700
#A53600
oklch(49% 0.155 39.6)
-
Step 800
800
#892B00
oklch(42.8% 0.136 39.4)
-
Step 900
900
#732300
oklch(37.7% 0.119 39.6)
-
Step 950
950
#471200
oklch(27% 0.086 39.4)
#F66B38 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) | #928231 | 0.178 |
| Deuteranopia (no green cones) | #B4A234 | 0.164 |
| Tritanopia (no blue cones) | #FF4B60 | 0.080 |
| Achromatopsia (no color) | #969696 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F66B38
#F66B38
oklch(69.1% 0.183 39.5)
- #00ADD1
#00ADD1
oklch(69.1% 0.126 219.8)
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 #F66B38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pinkish Orange #FF724C ΔE 0.027
- Tomato #FF6347 ΔE 0.027
- Orange Pink #FF6F52 ΔE 0.030
- Bright Orange #FF5B00 ΔE 0.032
- Burnt Sienna #E76F51 ΔE 0.032
- Orange Pant #FB5607 ΔE 0.036
- Melon #FF7855 ΔE 0.038
- Coral #FF7F50 ΔE 0.046
Use #F66B38 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.