#FB4621
Closest named color: Orangey Red (#FA4224). oklch(65.5% 0.222 33.1), rgb(251, 70, 33).
Aa
Black text reads best on this color (5.99:1).
About this color
#FB4621 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.222 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Orangey Red (#FA4224), ΔE 0.007 away. Black text reads best on it, at 5.99:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.222) |
| Temperature | warm |
| Nearest name | Orangey Red (#FA4224) |
| Black text | 5.99:1 |
| White text | 3.50:1 |
Values
| HEX | #FB4621 |
| RGB | rgb(251, 70, 33) |
| HSL | hsl(10, 96%, 56%) |
| OKLCH | oklch(65.5% 0.222 33.1) |
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 #FB4621 | 3.50:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #FB4621 | 5.99:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #FB4621 text on white | 3.50:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #FB4621 text on black | 5.99:1 | AA | Lc -40.6 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FEE3DD
oklch(93.6% 0.031 32.6)
-
Step 200
200
#FECBC0
oklch(88.4% 0.06 32.3)
-
Step 300
300
#FFA693
oklch(80.9% 0.11 32.7)
-
Step 400
400
#FA7054
oklch(70.7% 0.175 33.1)
-
Step 500
500 (this color)
#FB4621
oklch(65.5% 0.222 33.1)
-
Step 600
600
#D02A00
oklch(55.6% 0.205 33)
-
Step 700
700
#B02200
oklch(49.1% 0.181 33)
-
Step 800
800
#911B00
oklch(42.6% 0.157 33.2)
-
Step 900
900
#7A1500
oklch(37.6% 0.138 33.2)
-
Step 950
950
#4A0E03
oklch(27.1% 0.092 33.6)
#FB4621 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) | #7E6F18 | 0.234 |
| Deuteranopia (no green cones) | #AA9812 | 0.213 |
| Tritanopia (no blue cones) | #FF0040 | 0.064 |
| Achromatopsia (no color) | #898989 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #FB4621
#FB4621
oklch(65.5% 0.222 33.1)
- #00A2BA
#00A2BA
oklch(65.4% 0.115 213)
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 #FB4621, closest first.
No curated palette has a color within ΔE 0.04 of #FB4621.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orangey Red #FA4224 ΔE 0.007
- Orangered #FE420F ΔE 0.008
- Orange Red #FF4500 ΔE 0.012
- Red Orange #FD3C06 ΔE 0.013
- Blood Orange #FE4B03 ΔE 0.016
- Orange Pant #FB5607 ΔE 0.029
- Vermillion #F4320C ΔE 0.031
- Light Red #FF474C ΔE 0.036
Use #FB4621 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.