#EC470B
Closest named color: Vermillion (#F4320C). oklch(63% 0.21 36.4), rgb(236, 71, 11).
Aa
Black text reads best on this color (5.47:1).
About this color
#EC470B is a medium-light, vivid red. In OKLCH its lightness is 63%, its chroma 0.210 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Vermillion (#F4320C), ΔE 0.027 away. Black text reads best on it, at 5.47:1.
| Hue family | Reds |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Vermillion (#F4320C) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #EC470B |
| RGB | rgb(236, 71, 11) |
| HSL | hsl(16, 91%, 48%) |
| OKLCH | oklch(63% 0.21 36.4) |
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 #EC470B | 3.83:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #EC470B | 5.47:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #EC470B text on white | 3.83:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #EC470B text on black | 5.47:1 | AA | Lc -37.2 | 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
#FEF2EF
oklch(97% 0.014 34.3)
-
Step 100
100
#FDE4DC
oklch(93.7% 0.03 38.6)
-
Step 200
200
#FCCDBF
oklch(88.5% 0.057 37.2)
-
Step 300
300
#FBA992
oklch(80.9% 0.103 36.4)
-
Step 400
400
#F47652
oklch(70.7% 0.163 36.8)
-
Step 500
500 (this color)
#EC470B
oklch(63% 0.21 36.4)
-
Step 600
600
#C93800
oklch(55.5% 0.189 36.3)
-
Step 700
700
#AA2E00
oklch(49% 0.167 36.3)
-
Step 800
800
#8D2500
oklch(42.8% 0.145 36.5)
-
Step 900
900
#761D00
oklch(37.6% 0.128 36.3)
-
Step 950
950
#481102
oklch(27.1% 0.087 36.7)
#EC470B 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) | #7A6B00 | 0.215 |
| Deuteranopia (no green cones) | #A29000 | 0.195 |
| Tritanopia (no blue cones) | #FF003E | 0.075 |
| Achromatopsia (no color) | #828282 | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EC470B
#EC470B
oklch(63% 0.21 36.4)
- #0099B5
#0099B5
oklch(63% 0.112 216.9)
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 #EC470B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vermillion #F4320C ΔE 0.027
- Orangey Red #FA4224 ΔE 0.030
- Deep Orange #DC4D01 ΔE 0.031
- Red Orange #FD3C06 ΔE 0.032
- Tomato Red #EC2D01 ΔE 0.032
- Orangered #FE420F ΔE 0.034
- Orange Red #FF4500 ΔE 0.036
- Blood Orange #FE4B03 ΔE 0.037
Use #EC470B 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.