#EE3738
Closest named color: Imperial Red (#E63946). oklch(62.3% 0.219 26.1), rgb(238, 55, 56).
Aa
Black text reads best on this color (5.23:1).
About this color
#EE3738 is a medium-light, vivid red. In OKLCH its lightness is 62%, its chroma 0.219 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.021 away. Black text reads best on it, at 5.23:1.
| Hue family | Reds |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.219) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 5.23:1 |
| White text | 4.00:1 |
Values
| HEX | #EE3738 |
| RGB | rgb(238, 55, 56) |
| HSL | hsl(360, 84%, 57%) |
| OKLCH | oklch(62.3% 0.219 26.1) |
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 #EE3738 | 4.00:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #EE3738 | 5.23:1 | AA | Lc 38.3 | Non-text elements, placeholder text |
| #EE3738 text on white | 4.00:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #EE3738 text on black | 5.23:1 | AA | Lc -35.9 | 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
#FEE3DF
oklch(93.7% 0.03 27.8)
-
Step 200
200
#FECBC5
oklch(88.5% 0.059 26.1)
-
Step 300
300
#FEA59C
oklch(80.8% 0.107 26)
-
Step 400
400
#F96F66
oklch(70.7% 0.171 26.1)
-
Step 500
500 (this color)
#EE3738
oklch(62.3% 0.219 26.1)
-
Step 600
600
#D8001D
oklch(55.5% 0.226 26.1)
-
Step 700
700
#B70017
oklch(49.1% 0.199 26.1)
-
Step 800
800
#980011
oklch(42.8% 0.174 26.1)
-
Step 900
900
#7C0E13
oklch(37.7% 0.142 25.9)
-
Step 950
950
#490D0C
oklch(26.9% 0.09 26.4)
#EE3738 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) | #706636 | 0.237 |
| Deuteranopia (no green cones) | #9D8D30 | 0.216 |
| Tritanopia (no blue cones) | #FF003A | 0.040 |
| Achromatopsia (no color) | #7F7F7F | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EE3738
#EE3738
oklch(62.3% 0.219 26.1)
- #0099A6
#0099A6
oklch(62.3% 0.107 205.4)
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 #EE3738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.021
- Red Pantone #EF233C ΔE 0.021
- Vermillion #F4320C ΔE 0.027
- Strawberry #FB2943 ΔE 0.029
- Tomato Red #EC2D01 ΔE 0.030
- Cherry Red #F7022A ΔE 0.032
- Pinky Red #FC2647 ΔE 0.034
- Orangey Red #FA4224 ΔE 0.036
Use #EE3738 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.