#F55B19
Closest named color: Orange Pant (#FB5607). oklch(66.7% 0.201 39.6), rgb(245, 91, 25).
Aa
Black text reads best on this color (6.39:1).
About this color
#F55B19 is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.201 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 6.39:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.201) |
| Temperature | warm |
| Nearest name | Orange Pant (#FB5607) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #F55B19 |
| RGB | rgb(245, 91, 25) |
| HSL | hsl(18, 92%, 53%) |
| OKLCH | oklch(66.7% 0.201 39.6) |
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 #F55B19 | 3.28:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #F55B19 | 6.39:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #F55B19 text on white | 3.28:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #F55B19 text on black | 6.39:1 | 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
#FACEBF
oklch(88.5% 0.054 39.7)
-
Step 300
300
#F8AB91
oklch(80.9% 0.098 39.4)
-
Step 400
400
#F17950
oklch(70.7% 0.158 39.2)
-
Step 500
500 (this color)
#F55B19
oklch(66.7% 0.201 39.6)
-
Step 600
600
#C34200
oklch(55.6% 0.175 39.8)
-
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
#461301
oklch(27% 0.083 39.7)
#F55B19 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) | #887805 | 0.201 |
| Deuteranopia (no green cones) | #AE9B0A | 0.182 |
| Tritanopia (no blue cones) | #FF2E50 | 0.087 |
| Achromatopsia (no color) | #8E8E8E | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F55B19
#F55B19
oklch(66.7% 0.201 39.6)
- #00A5C7
#00A5C7
oklch(66.7% 0.121 219.5)
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 #F55B19, 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 0.033
- Orangered #FE420F ΔE 0.037
- Tomato #FF6347 ΔE 0.039
- Orangey Red #FA4224 ΔE 0.040
- Red Orange #FD3C06 ΔE 0.043
Use #F55B19 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.