#F66319
Closest named color: Bright Orange (#FF5B00). oklch(67.9% 0.196 42), rgb(246, 99, 25).
Aa
Black text reads best on this color (6.71:1).
About this color
#F66319 is a medium-light, vivid orange. In OKLCH its lightness is 68%, its chroma 0.196 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Bright Orange (#FF5B00), ΔE 0.019 away. Black text reads best on it, at 6.71:1.
| Hue family | Oranges |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.196) |
| Temperature | warm |
| Nearest name | Bright Orange (#FF5B00) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #F66319 |
| RGB | rgb(246, 99, 25) |
| HSL | hsl(20, 92%, 53%) |
| OKLCH | oklch(67.9% 0.196 42) |
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 #F66319 | 3.12:1 | AA large text | Lc -62.7 | Content text, not long reading |
| Black text on #F66319 | 6.71:1 | AA | Lc 46.7 | Large or bold text, headings |
| #F66319 text on white | 3.12:1 | AA large text | Lc 57.3 | Large or bold text, headings |
| #F66319 text on black | 6.71:1 | AA | Lc -44.4 | 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FFE3D8
oklch(93.6% 0.034 42.7)
-
Step 200
200
#FFCCB9
oklch(88.5% 0.064 41.4)
-
Step 300
300
#FFA886
oklch(81% 0.113 42.1)
-
Step 400
400 (this color)
#F66319
oklch(67.9% 0.196 42)
-
Step 500
500
#E35500
oklch(63.1% 0.191 41.8)
-
Step 600
600
#C04700
oklch(55.7% 0.168 42)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#862F00
oklch(42.8% 0.129 42)
-
Step 900
900
#702600
oklch(37.6% 0.113 42)
-
Step 950
950
#451400
oklch(26.9% 0.081 41.8)
#F66319 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) | #8E7D02 | 0.190 |
| Deuteranopia (no green cones) | #B29E0D | 0.171 |
| Tritanopia (no blue cones) | #FF3C56 | 0.091 |
| Achromatopsia (no color) | #929292 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F66319
#F66319
oklch(67.9% 0.196 42)
- #00A8CF
#00A8CF
oklch(67.8% 0.126 222.2)
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 #F66319, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Orange #FF5B00 ΔE 0.019
- Orange Pant #FB5607 ΔE 0.021
- Tomato #FF6347 ΔE 0.037
- Blood Orange #FE4B03 ΔE 0.038
- Pinkish Orange #FF724C ΔE 0.045
- Burnt Sienna #E76F51 ΔE 0.045
- Orange Red #FF4500 ΔE 0.046
- Orange Pink #FF6F52 ΔE 0.047
Use #F66319 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.