#E43719
Closest named color: Tomato Red (#EC2D01). oklch(60.3% 0.213 32.1), rgb(228, 55, 25).
Aa
Black text reads best on this color (4.85:1).
About this color
#E43719 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.213 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.016 away. Black text reads best on it, at 4.85:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.213) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #E43719 |
| RGB | rgb(228, 55, 25) |
| HSL | hsl(9, 80%, 50%) |
| OKLCH | oklch(60.3% 0.213 32.1) |
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 #E43719 | 4.32:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #E43719 | 4.85:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #E43719 text on white | 4.32:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #E43719 text on black | 4.85:1 | AA | Lc -33.4 | 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 500.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DD
oklch(93.5% 0.03 33.1)
-
Step 200
200
#FDCCC1
oklch(88.5% 0.058 32.8)
-
Step 300
300
#FCA896
oklch(80.9% 0.103 32.6)
-
Step 400
400
#F6735B
oklch(70.7% 0.166 32.1)
-
Step 500
500 (this color)
#E43719
oklch(60.3% 0.213 32.1)
-
Step 600
600
#D22500
oklch(55.6% 0.21 32.2)
-
Step 700
700
#B21D00
oklch(49.1% 0.186 32)
-
Step 800
800
#931600
oklch(42.7% 0.162 32)
-
Step 900
900
#7B1403
oklch(37.8% 0.139 32)
-
Step 950
950
#480F06
oklch(26.9% 0.088 32.1)
#E43719 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) | #6E6110 | 0.226 |
| Deuteranopia (no green cones) | #988706 | 0.204 |
| Tritanopia (no blue cones) | #FC0033 | 0.057 |
| Achromatopsia (no color) | #7A7A7A | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E43719
#E43719
oklch(60.3% 0.213 32.1)
- #0091A5
#0091A5
oklch(60.3% 0.105 211.7)
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 #E43719, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.016
- Vermillion #F4320C ΔE 0.030
- Deep Orange #DC4D01 ΔE 0.037
- Imperial Red #E63946 ΔE 0.038
- Red Pantone #EF233C ΔE 0.042
- Cherry Red #F7022A ΔE 0.048
- Orangey Red #FA4224 ΔE 0.049
- Fire Engine Red #FE0002 ΔE 0.051
Use #E43719 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.