#E03929
Closest named color: Tomato Red (#EC2D01). oklch(59.8% 0.206 29.8), rgb(224, 57, 41).
Aa
Black text reads best on this color (4.78:1).
About this color
#E03929 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.206 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Tomato Red (#EC2D01), ΔE 0.026 away. Black text reads best on it, at 4.78:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.206) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.78:1 |
| White text | 4.38:1 |
Values
| HEX | #E03929 |
| RGB | rgb(224, 57, 41) |
| HSL | hsl(5, 75%, 52%) |
| OKLCH | oklch(59.8% 0.206 29.8) |
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 #E03929 | 4.38:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #E03929 | 4.78:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #E03929 text on white | 4.38:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #E03929 text on black | 4.78:1 | AA | Lc -32.8 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89A
oklch(80.9% 0.101 30)
-
Step 400
400
#F47462
oklch(70.6% 0.161 29.8)
-
Step 500
500 (this color)
#E03929
oklch(59.8% 0.206 29.8)
-
Step 600
600
#D70E01
oklch(55.5% 0.223 29.8)
-
Step 700
700
#B60900
oklch(49% 0.198 29.8)
-
Step 800
800
#970600
oklch(42.7% 0.172 29.8)
-
Step 900
900
#79170E
oklch(37.7% 0.134 29.9)
-
Step 950
950
#47100A
oklch(26.9% 0.085 29.8)
#E03929 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) | #6D6125 | 0.219 |
| Deuteranopia (no green cones) | #968620 | 0.200 |
| Tritanopia (no blue cones) | #F70037 | 0.055 |
| Achromatopsia (no color) | #787878 | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E03929
#E03929
oklch(59.8% 0.206 29.8)
- #0090A2
#0090A2
oklch(59.9% 0.104 210.2)
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 #E03929, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tomato Red #EC2D01 ΔE 0.026
- Imperial Red #E63946 ΔE 0.031
- Vermillion #F4320C ΔE 0.039
- Red Pantone #EF233C ΔE 0.040
- Deep Orange #DC4D01 ΔE 0.041
- Faded Red #D3494E ΔE 0.041
- Pale Red #D9544D ΔE 0.045
- Crimson #DC143C ΔE 0.048
Use #E03929 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.