#F55B11
Closest named color: Orange Pant (#FB5607). oklch(66.7% 0.202 40.4), rgb(245, 91, 17).
Aa
Black text reads best on this color (6.38:1).
About this color
#F55B11 is a medium-light, vivid orange. In OKLCH its lightness is 67%, its chroma 0.202 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Orange Pant (#FB5607), ΔE 0.012 away. Black text reads best on it, at 6.38:1.
| Hue family | Oranges |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.202) |
| Temperature | warm |
| Nearest name | Orange Pant (#FB5607) |
| Black text | 6.38:1 |
| White text | 3.28:1 |
Values
| HEX | #F55B11 |
| RGB | rgb(245, 91, 17) |
| HSL | hsl(19, 92%, 51%) |
| OKLCH | oklch(66.7% 0.202 40.4) |
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 #F55B11 | 3.28:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #F55B11 | 6.38:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #F55B11 text on white | 3.28:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #F55B11 text on black | 6.38:1 | AA | Lc -42.6 | 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 500.
-
Step 50
50
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FCE4DC
oklch(93.6% 0.029 39.3)
-
Step 200
200
#FACEBE
oklch(88.5% 0.055 41)
-
Step 300
300
#F8AB90
oklch(80.9% 0.099 40.1)
-
Step 400
400
#F17A4E
oklch(70.8% 0.158 40.4)
-
Step 500
500 (this color)
#F55B11
oklch(66.7% 0.202 40.4)
-
Step 600
600
#C24300
oklch(55.5% 0.173 40.3)
-
Step 700
700
#A43800
oklch(49.1% 0.153 40.5)
-
Step 800
800
#882C00
oklch(42.7% 0.134 40.1)
-
Step 900
900
#722400
oklch(37.7% 0.117 40.3)
-
Step 950
950
#461300
oklch(26.9% 0.084 40.5)
#F55B11 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) | #887800 | 0.200 |
| Deuteranopia (no green cones) | #AE9B00 | 0.181 |
| Tritanopia (no blue cones) | #FF2D4F | 0.089 |
| Achromatopsia (no color) | #8E8E8E | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F55B11
#F55B11
oklch(66.7% 0.202 40.4)
- #00A5C8
#00A5C8
oklch(66.8% 0.122 220.1)
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 #F55B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orange Pant #FB5607 ΔE 0.012
- Bright Orange #FF5B00 ΔE 0.019
- Blood Orange #FE4B03 ΔE 0.026
- Orange Red #FF4500 ΔE 0.034
- Orangered #FE420F ΔE 0.038
- Tomato #FF6347 ΔE 0.041
- Orangey Red #FA4224 ΔE 0.042
- Red Orange #FD3C06 ΔE 0.044
Use #F55B11 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.