Cool Mustard Yellow
A vivid, warm light orange.
#FFB458
rgb(255, 180, 88)
Color formats
HEX
#FFB458
RGB
rgb(255, 180, 88)
HSL
hsl(33.1, 100%, 67.3%)
HSV
hsv(33.1, 65.5%, 100%)
CMYK
cmyk(0%, 29.4%, 65.5%, 0%)
Color shades
Lighter tints and darker shades of Cool Mustard Yellow.
Lightest
#FFFFFF
Lighter
#FFE2BE
Base
#FFB458
Darker
#F18500
Darkest
#8B4D00
Complementary
The opposite hue on the color wheel.
Analogous
Neighbouring hues that harmonise.
Contrast & readability
Where Cool Mustard Yellow works
Cool Mustard Yellow (#FFB458) is a vivid, warm light orange. Its mid-range lightness makes it a flexible choice for buttons, fills and accents that need to read clearly without overpowering a layout. Its warm undertone gives it an energetic, inviting feel — a good fit for friendly, expressive brands.
Observe the spectrum
More colors related to Cool Mustard Yellow — or browse all yellows.
Color tools
Color Format Converter
Convert any color between HEX, RGB, HSL, HSV, CMYK and OKLCH instantly — and copy ready-to-paste CSS, SCSS or Tailwind.
Color Picker
Pick any color visually and copy accurate HEX, RGB, HSL and CMYK codes — no signup.
Palette Generator
Generate harmonious color palettes from any base color — complementary, analogous, triadic and more, with instant CSS export.
Contrast Checker
Test color contrast against WCAG 2.1 AA/AAA — live pass/fail, font-size rules, and a real component preview.
Shade & Tint Generator
Generate 10–12 step tints and shades from any color — perfect 50–950 UI ramps with CSS and Tailwind export.
Complementary Color Finder
Find the perfect complementary (180° opposite) color for any shade, with HEX/RGB/HSL and contrast info.