#EF6445
Closest named color: Burnt Sienna (#E76F51). oklch(67.3% 0.178 34.1), rgb(239, 100, 69).
Aa
Black text reads best on this color (6.57:1).
About this color
#EF6445 is a medium-light, vivid red. In OKLCH its lightness is 67%, its chroma 0.178 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.023 away. Black text reads best on it, at 6.57:1.
| Hue family | Reds |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.57:1 |
| White text | 3.19:1 |
Values
| HEX | #EF6445 |
| RGB | rgb(239, 100, 69) |
| HSL | hsl(11, 84%, 60%) |
| OKLCH | oklch(67.3% 0.178 34.1) |
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 #EF6445 | 3.19:1 | AA large text | Lc -63.7 | Content text, not long reading |
| Black text on #EF6445 | 6.57:1 | AA | Lc 45.7 | Large or bold text, headings |
| #EF6445 text on white | 3.19:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #EF6445 text on black | 6.57:1 | 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
#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)
#EF6445
oklch(67.3% 0.178 34.1)
-
Step 500
500
#F33A00
oklch(63% 0.226 34.1)
-
Step 600
600
#CE2F00
oklch(55.6% 0.2 34)
-
Step 700
700
#AE2700
oklch(49.1% 0.176 34.2)
-
Step 800
800
#901E00
oklch(42.7% 0.153 34)
-
Step 900
900
#791800
oklch(37.7% 0.135 34.2)
-
Step 950
950
#4A0D01
oklch(27% 0.094 34.5)
#EF6445 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) | #8A7D41 | 0.181 |
| Deuteranopia (no green cones) | #AC9C41 | 0.167 |
| Tritanopia (no blue cones) | #FF455D | 0.068 |
| Achromatopsia (no color) | #909090 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF6445
#EF6445
oklch(67.3% 0.178 34.1)
- #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 #EF6445, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.023
- Tomato #FF6347 ΔE 0.029
- Orange Pant #FB5607 ΔE 0.038
- Grapefruit #FD5956 ΔE 0.038
- Orange Pink #FF6F52 ΔE 0.040
- Bright Orange #FF5B00 ΔE 0.042
- Pinkish Orange #FF724C ΔE 0.044
- Coral Pink #FF6163 ΔE 0.046
Use #EF6445 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.