#EF5A28
Closest named color: Orange Pant (#FB5607). oklch(65.8% 0.194 37.7), rgb(239, 90, 40).
Aa
Black text reads best on this color (6.16:1).
About this color
#EF5A28 is a medium-light, vivid red. In OKLCH its lightness is 66%, its chroma 0.194 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Orange Pant (#FB5607), ΔE 0.023 away. Black text reads best on it, at 6.16:1.
| Hue family | Reds |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.194) |
| Temperature | warm |
| Nearest name | Orange Pant (#FB5607) |
| Black text | 6.16:1 |
| White text | 3.40:1 |
Values
| HEX | #EF5A28 |
| RGB | rgb(239, 90, 40) |
| HSL | hsl(15, 86%, 55%) |
| OKLCH | oklch(65.8% 0.194 37.7) |
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 #EF5A28 | 3.40:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #EF5A28 | 6.16:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #EF5A28 text on white | 3.40:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #EF5A28 text on black | 6.16:1 | AA | Lc -41.1 | 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 500.
-
Step 50
50
#FEF3EF
oklch(97.2% 0.013 41.2)
-
Step 100
100
#FBE4DD
oklch(93.6% 0.027 37.6)
-
Step 200
200
#F9CEC1
oklch(88.5% 0.052 37.5)
-
Step 300
300
#F7AB94
oklch(80.9% 0.096 37.5)
-
Step 400
400
#EF7B57
oklch(70.8% 0.152 37.9)
-
Step 500
500 (this color)
#EF5A28
oklch(65.8% 0.194 37.7)
-
Step 600
600
#C73D00
oklch(55.7% 0.183 37.8)
-
Step 700
700
#A83200
oklch(49.1% 0.162 37.8)
-
Step 800
800
#8B2800
oklch(42.8% 0.14 37.9)
-
Step 900
900
#752000
oklch(37.7% 0.124 37.7)
-
Step 950
950
#451405
oklch(27% 0.079 37.5)
#EF5A28 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) | #85761F | 0.195 |
| Deuteranopia (no green cones) | #AA9720 | 0.176 |
| Tritanopia (no blue cones) | #FF3150 | 0.079 |
| Achromatopsia (no color) | #8B8B8B | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF5A28
#EF5A28
oklch(65.8% 0.194 37.7)
- #00A2C1
#00A2C1
oklch(65.7% 0.118 217.9)
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 #EF5A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Orange Pant #FB5607 ΔE 0.023
- Blood Orange #FE4B03 ΔE 0.031
- Bright Orange #FF5B00 ΔE 0.033
- Orange Red #FF4500 ΔE 0.037
- Orangey Red #FA4224 ΔE 0.038
- Orangered #FE420F ΔE 0.039
- Tomato #FF6347 ΔE 0.043
- Red Orange #FD3C06 ΔE 0.043
Use #EF5A28 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.