#EF6B30
Closest named color: Burnt Sienna (#E76F51). oklch(68% 0.178 42.2), rgb(239, 107, 48).
Aa
Black text reads best on this color (6.81:1).
About this color
#EF6B30 is a medium-light, vivid orange. In OKLCH its lightness is 68%, its chroma 0.178 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Sienna (#E76F51), ΔE 0.030 away. Black text reads best on it, at 6.81:1.
| Hue family | Oranges |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Burnt Sienna (#E76F51) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #EF6B30 |
| RGB | rgb(239, 107, 48) |
| HSL | hsl(19, 86%, 56%) |
| OKLCH | oklch(68% 0.178 42.2) |
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 #EF6B30 | 3.08:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #EF6B30 | 6.81:1 | AA | Lc 47.1 | Large or bold text, headings |
| #EF6B30 text on white | 3.08:1 | AA large text | Lc 57.0 | Large or bold text, headings |
| #EF6B30 text on black | 6.81:1 | AA | Lc -44.8 | 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
#FEE3D9
oklch(93.5% 0.033 41.5)
-
Step 200
200
#FECDBA
oklch(88.6% 0.062 42.2)
-
Step 300
300
#FEA887
oklch(80.9% 0.112 41.7)
-
Step 400
400 (this color)
#EF6B30
oklch(68% 0.178 42.2)
-
Step 500
500
#E25600
oklch(63.1% 0.189 42.3)
-
Step 600
600
#BF4700
oklch(55.5% 0.167 42.1)
-
Step 700
700
#A23B00
oklch(49.2% 0.148 42.2)
-
Step 800
800
#852F00
oklch(42.6% 0.128 42.2)
-
Step 900
900
#702600
oklch(37.6% 0.113 42)
-
Step 950
950
#451500
oklch(27% 0.081 42.7)
#EF6B30 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) | #908027 | 0.170 |
| Deuteranopia (no green cones) | #B09E2C | 0.155 |
| Tritanopia (no blue cones) | #FF4D5F | 0.085 |
| Achromatopsia (no color) | #939393 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF6B30
#EF6B30
oklch(68% 0.178 42.2)
- #00A9D0
#00A9D0
oklch(68.1% 0.126 222.1)
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 #EF6B30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Sienna #E76F51 ΔE 0.030
- Bright Orange #FF5B00 ΔE 0.036
- Orange Pant #FB5607 ΔE 0.038
- Tomato #FF6347 ΔE 0.040
- Pinkish Orange #FF724C ΔE 0.041
- Orange Pink #FF6F52 ΔE 0.043
- Pumpkin #E17701 ΔE 0.044
- Melon #FF7855 ΔE 0.050
Use #EF6B30 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.