#EF6344
Closest named color: Burnt Sienna (#E76F51). oklch(67.2% 0.179 34), rgb(239, 99, 68).
Aa
Black text reads best on this color (6.53:1).
About this color
#EF6344 is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.179 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.025 away. Black text reads best on it, at 6.53:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.53:1 |
| White text | 3.21:1 |
Values
| HEX | #EF6344 |
| RGB | rgb(239, 99, 68) |
| HSL | hsl(11, 84%, 60%) |
| OKLCH | oklch(67.2% 0.179 34) |
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 #EF6344 | 3.21:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #EF6344 | 6.53:1 | AA | Lc 45.5 | Large or bold text, headings |
| #EF6344 text on white | 3.21:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #EF6344 text on black | 6.53:1 | AA | Lc -43.2 | 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 400.
-
Step 50
50
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FFE3DC
oklch(93.7% 0.032 34.3)
-
Step 200
200
#FFCBBF
oklch(88.5% 0.062 33.2)
-
Step 300
300
#FFA691
oklch(80.8% 0.11 33.9)
-
Step 400
400 (this color)
#EF6344
oklch(67.2% 0.179 34)
-
Step 500
500
#F43A00
oklch(63.2% 0.227 34)
-
Step 600
600
#CE2F00
oklch(55.6% 0.2 34)
-
Step 700
700
#AE2600
oklch(49% 0.177 33.9)
-
Step 800
800
#901E00
oklch(42.7% 0.153 34)
-
Step 900
900
#791800
oklch(37.7% 0.135 34.2)
-
Step 950
950
#4A0C01
oklch(26.9% 0.095 34)
#EF6344 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) | #897C40 | 0.182 |
| Deuteranopia (no green cones) | #AC9B40 | 0.167 |
| Tritanopia (no blue cones) | #FF445C | 0.067 |
| Achromatopsia (no color) | #909090 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF6344
#EF6344
oklch(67.2% 0.179 34)
- #00A8C2
#00A8C2
oklch(67.3% 0.118 213.9)
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 #EF6344, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.025
- Tomato #FF6347 ΔE 0.030
- Orange Pant #FB5607 ΔE 0.037
- Grapefruit #FD5956 ΔE 0.038
- Bright Orange #FF5B00 ΔE 0.041
- Orange Pink #FF6F52 ΔE 0.041
- Pinkish Orange #FF724C ΔE 0.045
- Blood Orange #FE4B03 ΔE 0.046
Use #EF6344 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.