#E03327
Closest named color: Tomato Red (#EC2D01). oklch(59.3% 0.21 29.1), rgb(224, 51, 39).
Aa
Black text reads best on this color (4.67:1).
About this color
#E03327 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.210 and its hue 29°. 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 4.67:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Tomato Red (#EC2D01) |
| Black text | 4.67:1 |
| White text | 4.49:1 |
Values
| HEX | #E03327 |
| RGB | rgb(224, 51, 39) |
| HSL | hsl(4, 75%, 52%) |
| OKLCH | oklch(59.3% 0.21 29.1) |
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 #E03327 | 4.49:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #E03327 | 4.67:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #E03327 text on white | 4.49:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #E03327 text on black | 4.67:1 | AA | Lc -32.1 | 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 600.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC5
oklch(88.5% 0.052 29.9)
-
Step 300
300
#F8AA9D
oklch(81% 0.095 29.7)
-
Step 400
400
#F07768
oklch(70.6% 0.152 28.7)
-
Step 500
500
#E74C3D
oklch(63.1% 0.194 29.2)
-
Step 600
600 (this color)
#E03327
oklch(59.3% 0.21 29.1)
-
Step 700
700
#B60D08
oklch(49.2% 0.196 29.2)
-
Step 800
800
#93140D
oklch(42.6% 0.161 29.2)
-
Step 900
900
#761C14
oklch(37.6% 0.126 29.4)
-
Step 950
950
#46120D
oklch(27% 0.081 29)
#E03327 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) | #6A5F23 | 0.226 |
| Deuteranopia (no green cones) | #94841D | 0.205 |
| Tritanopia (no blue cones) | #F70033 | 0.050 |
| Achromatopsia (no color) | #777777 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E03327
#E03327
oklch(59.3% 0.21 29.1)
- #008E9F
#008E9F
oklch(59.2% 0.102 209.5)
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 #E03327, 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
- Red Pantone #EF233C ΔE 0.038
- Vermillion #F4320C ΔE 0.041
- Crimson #DC143C ΔE 0.042
- Faded Red #D3494E ΔE 0.044
- Deep Orange #DC4D01 ΔE 0.046
- Cherry Red #F7022A ΔE 0.047
Use #E03327 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.