#EE6631
Closest named color: Burnt Sienna (#E76F51). oklch(67.2% 0.18 40.2), rgb(238, 102, 49).
Aa
Black text reads best on this color (6.58:1).
About this color
#EE6631 is a medium-light, vivid orange. In OKLCH its lightness is 67%, its chroma 0.180 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.029 away. Black text reads best on it, at 6.58:1.
| Hue family | Oranges |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.58:1 |
| White text | 3.19:1 |
Values
| HEX | #EE6631 |
| RGB | rgb(238, 102, 49) |
| HSL | hsl(17, 85%, 56%) |
| OKLCH | oklch(67.2% 0.18 40.2) |
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 #EE6631 | 3.19:1 | AA large text | Lc -63.7 | Content text, not long reading |
| Black text on #EE6631 | 6.58:1 | AA | Lc 45.8 | Large or bold text, headings |
| #EE6631 text on white | 3.19:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #EE6631 text on black | 6.58:1 | AA | Lc -43.4 | 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 400.
-
Step 50
50
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FEE3DA
oklch(93.5% 0.032 39.3)
-
Step 200
200
#FFCCBA
oklch(88.5% 0.063 40.3)
-
Step 300
300
#FFA789
oklch(80.8% 0.113 39.6)
-
Step 400
400 (this color)
#EE6631
oklch(67.2% 0.18 40.2)
-
Step 500
500
#E65100
oklch(63.1% 0.197 40.3)
-
Step 600
600
#C24300
oklch(55.5% 0.173 40.3)
-
Step 700
700
#A43700
oklch(49% 0.153 40.1)
-
Step 800
800
#882C00
oklch(42.7% 0.134 40.1)
-
Step 900
900
#722400
oklch(37.7% 0.117 40.3)
-
Step 950
950
#461300
oklch(26.9% 0.084 40.5)
#EE6631 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) | #8C7D29 | 0.177 |
| Deuteranopia (no green cones) | #AE9C2C | 0.161 |
| Tritanopia (no blue cones) | #FF465B | 0.082 |
| Achromatopsia (no color) | #909090 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EE6631
#EE6631
oklch(67.2% 0.18 40.2)
- #00A6CA
#00A6CA
oklch(67.1% 0.123 220.6)
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 #EE6631, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.029
- Orange Pant #FB5607 ΔE 0.032
- Bright Orange #FF5B00 ΔE 0.034
- Tomato #FF6347 ΔE 0.038
- Pinkish Orange #FF724C ΔE 0.046
- Blood Orange #FE4B03 ΔE 0.046
- Orange Pink #FF6F52 ΔE 0.046
- Pumpkin #E17701 ΔE 0.051
Use #EE6631 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.