#EF6C23
Closest named color: Bright Orange (#FF5B00). oklch(68.1% 0.18 45), rgb(239, 108, 35).
Aa
Black text reads best on this color (6.83:1).
About this color
#EF6C23 is a medium-light, vivid orange. In OKLCH its lightness is 68%, its chroma 0.180 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Bright Orange (#FF5B00), ΔE 0.037 away. Black text reads best on it, at 6.83:1.
| Hue family | Oranges |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.180) |
| Temperature | warm |
| Nearest name | Bright Orange (#FF5B00) |
| Black text | 6.83:1 |
| White text | 3.07:1 |
Values
| HEX | #EF6C23 |
| RGB | rgb(239, 108, 35) |
| HSL | hsl(21, 86%, 54%) |
| OKLCH | oklch(68.1% 0.18 45) |
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 #EF6C23 | 3.07:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #EF6C23 | 6.83:1 | AA | Lc 47.2 | Large or bold text, headings |
| #EF6C23 text on white | 3.07:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #EF6C23 text on black | 6.83:1 | AA | Lc -44.9 | 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
#FFF3ED
oklch(97.2% 0.015 48.6)
-
Step 100
100
#FEE4D8
oklch(93.7% 0.033 46.4)
-
Step 200
200
#FECDB8
oklch(88.6% 0.063 44.4)
-
Step 300
300
#FDA983
oklch(80.8% 0.112 45.1)
-
Step 400
400 (this color)
#EF6C23
oklch(68.1% 0.18 45)
-
Step 500
500
#DE5C00
oklch(63.2% 0.181 45)
-
Step 600
600
#BB4C00
oklch(55.6% 0.159 44.9)
-
Step 700
700
#9E3F00
oklch(49.1% 0.14 44.9)
-
Step 800
800
#833300
oklch(42.8% 0.122 45)
-
Step 900
900
#6E2900
oklch(37.7% 0.109 44.5)
-
Step 950
950
#431700
oklch(27% 0.076 45.7)
#EF6C23 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) | #928114 | 0.168 |
| Deuteranopia (no green cones) | #B19E1D | 0.152 |
| Tritanopia (no blue cones) | #FF4D5E | 0.092 |
| Achromatopsia (no color) | #939393 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #EF6C23
#EF6C23
oklch(68.1% 0.18 45)
- #00A8D4
#00A8D4
oklch(68.1% 0.129 225.1)
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 #EF6C23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Orange #FF5B00 ΔE 0.037
- Pumpkin #E17701 ΔE 0.037
- Burnt Sienna #E76F51 ΔE 0.037
- Orange Pant #FB5607 ΔE 0.040
- Pinkish Orange #FF724C ΔE 0.045
- Tomato #FF6347 ΔE 0.047
- Pumpkin Orange #FB7D07 ΔE 0.047
- Dusty Orange #F0833A ΔE 0.047
Use #EF6C23 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.