#E10704
Closest named color: Crimson (#DC143C). oklch(57.3% 0.233 29.2), rgb(225, 7, 4).
Aa
White text reads best on this color (4.96:1).
About this color
#E10704 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.233 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.038 away. White text reads best on it, at 4.96:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.233) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.23:1 |
| White text | 4.96:1 |
Values
| HEX | #E10704 |
| RGB | rgb(225, 7, 4) |
| HSL | hsl(1, 97%, 45%) |
| OKLCH | oklch(57.3% 0.233 29.2) |
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 #E10704 | 4.96:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #E10704 | 4.23:1 | AA large text | Lc 32.6 | Non-text elements, placeholder text |
| #E10704 text on white | 4.96:1 | AA | Lc 71.5 | Content text, not long reading |
| #E10704 text on black | 4.23:1 | AA large text | Lc -30.1 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FDCBC3
oklch(88.4% 0.058 28.8)
-
Step 300
300
#FDA799
oklch(80.9% 0.105 29.7)
-
Step 400
400
#F77160
oklch(70.6% 0.168 29.3)
-
Step 500
500
#EF3F31
oklch(63% 0.214 29.2)
-
Step 600
600 (this color)
#E10704
oklch(57.3% 0.233 29.2)
-
Step 700
700
#B80000
oklch(49.1% 0.202 29.2)
-
Step 800
800
#980000
oklch(42.7% 0.175 29.2)
-
Step 900
900
#7B120C
oklch(37.7% 0.14 29.1)
-
Step 950
950
#490F09
oklch(27.1% 0.089 29.8)
#E10704 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) | #605400 | 0.255 |
| Deuteranopia (no green cones) | #907F00 | 0.226 |
| Tritanopia (no blue cones) | #F90011 | 0.049 |
| Achromatopsia (no color) | #707070 | 0.234 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #E10704
#E10704
oklch(57.3% 0.233 29.2)
- #008898
#008898
oklch(57.4% 0.099 209.2)
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 #E10704, closest first.
No curated palette has a color within ΔE 0.04 of #E10704.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.038
- Tomato Red #EC2D01 ΔE 0.038
- Red Pantone #EF233C ΔE 0.048
- Cherry Red #F7022A ΔE 0.049
- Cherry #CF0234 ΔE 0.050
- Imperial Red #E63946 ΔE 0.054
- Vermillion #F4320C ΔE 0.055
- Fire Engine Red #FE0002 ΔE 0.058
Use #E10704 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.