#F55A3F
Closest named color: Tomato (#FF6347). oklch(66.9% 0.195 32.2), rgb(245, 90, 63).
Aa
Black text reads best on this color (6.41:1).
About this color
#F55A3F is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.195 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato (#FF6347), ΔE 0.027 away. Black text reads best on it, at 6.41:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Tomato (#FF6347) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #F55A3F |
| RGB | rgb(245, 90, 63) |
| HSL | hsl(9, 90%, 60%) |
| OKLCH | oklch(66.9% 0.195 32.2) |
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 #F55A3F | 3.27:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #F55A3F | 6.41:1 | AA | Lc 45.0 | Large or bold text, headings |
| #F55A3F text on white | 3.27:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #F55A3F text on black | 6.41:1 | AA | Lc -42.7 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FFE3DC
oklch(93.7% 0.032 34.3)
-
Step 200
200
#FFCBC0
oklch(88.5% 0.061 32.1)
-
Step 300
300
#FFA694
oklch(80.9% 0.109 32)
-
Step 400
400 (this color)
#F55A3F
oklch(66.9% 0.195 32.2)
-
Step 500
500
#F82E00
oklch(63.1% 0.238 32.2)
-
Step 600
600
#D22500
oklch(55.6% 0.21 32.2)
-
Step 700
700
#B21E00
oklch(49.2% 0.185 32.2)
-
Step 800
800
#931700
oklch(42.7% 0.161 32.2)
-
Step 900
900
#7C1100
oklch(37.7% 0.143 32.1)
-
Step 950
950
#4D0700
oklch(27.1% 0.102 32.2)
#F55A3F 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) | #86793B | 0.201 |
| Deuteranopia (no green cones) | #AC9B3A | 0.185 |
| Tritanopia (no blue cones) | #FF3155 | 0.068 |
| Achromatopsia (no color) | #8E8E8E | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #F55A3F
#F55A3F
oklch(66.9% 0.195 32.2)
- #00A7BF
#00A7BF
oklch(66.9% 0.117 212.6)
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 #F55A3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato #FF6347 ΔE 0.027
- Grapefruit #FD5956 ΔE 0.029
- Orange Pant #FB5607 ΔE 0.030
- Blood Orange #FE4B03 ΔE 0.033
- Orangey Red #FA4224 ΔE 0.035
- Bright Orange #FF5B00 ΔE 0.036
- Orange Red #FF4500 ΔE 0.037
- Orangered #FE420F ΔE 0.038
Use #F55A3F 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.