#ECB903
Closest named color: Golden (#F5BF03). oklch(80.9% 0.165 88.5), rgb(236, 185, 3).
Aa
Black text reads best on this color (11.50:1).
About this color
#ECB903 is a light, vivid orange. In OKLCH its lightness is 81%, its chroma 0.165 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Golden (#F5BF03), ΔE 0.021 away. Black text reads best on it, at 11.50:1.
| Hue family | Oranges |
| Lightness | light (81%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Golden (#F5BF03) |
| Black text | 11.50:1 |
| White text | 1.82:1 |
Values
| HEX | #ECB903 |
| RGB | rgb(236, 185, 3) |
| HSL | hsl(47, 97%, 47%) |
| OKLCH | oklch(80.9% 0.165 88.5) |
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 #ECB903 | 1.82:1 | Fails | Lc -37.9 | Non-text elements, placeholder text |
| Black text on #ECB903 | 11.50:1 | AAA | Lc 70.0 | Content text, not long reading |
| #ECB903 text on white | 1.82:1 | Fails | Lc 33.8 | Non-text elements, placeholder text |
| #ECB903 text on black | 11.50:1 | AAA | Lc -68.8 | Content text, not long reading |
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 300.
-
Step 50
50
#FBF5E5
oklch(97.1% 0.022 89.8)
-
Step 100
100
#F7E9C6
oklch(93.6% 0.048 88.8)
-
Step 200
200
#F2D692
oklch(88.4% 0.092 88.1)
-
Step 300
300 (this color)
#ECB903
oklch(80.9% 0.165 88.5)
-
Step 400
400
#C59A00
oklch(70.6% 0.144 88.6)
-
Step 500
500
#A98400
oklch(63.1% 0.129 88.8)
-
Step 600
600
#8F6F00
oklch(55.8% 0.114 88.6)
-
Step 700
700
#785D00
oklch(49.2% 0.101 88.9)
-
Step 800
800
#634C00
oklch(42.9% 0.088 88.6)
-
Step 900
900
#523F00
oklch(37.8% 0.077 89.3)
-
Step 950
950
#312400
oklch(26.8% 0.055 88.3)
#ECB903 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) | #D1B800 | 0.043 |
| Deuteranopia (no green cones) | #DDC51C | 0.035 |
| Tritanopia (no blue cones) | #FFA79E | 0.149 |
| Achromatopsia (no color) | #C0C0C0 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ECB903
#ECB903
oklch(80.9% 0.165 88.5)
- #A7BFFF
#A7BFFF
oklch(81% 0.095 268.4)
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 #ECB903, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Golden #F5BF03 ΔE 0.021
- Golden Rod #F9BC08 ΔE 0.023
- Macaroni And Cheese #EFB435 ΔE 0.024
- Orangey Yellow #FDB915 ΔE 0.028
- Marigold #FCC006 ΔE 0.032
- Yellow Orange #FCB001 ΔE 0.032
- Amber #FFBE0B ΔE 0.034
- Squash #F2AB15 ΔE 0.036
Use #ECB903 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.