#128FD4 Hex Color
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With its medium-light value and fairly strong saturation, #128fd4 is a cool blue with a slight cyan cast. It feels dependable and controlled, fitting technology, finance, healthcare, and security branding. Use it as a supporting color beside charcoal or warm white rather than a full-page background. The hex code #128fd4 provides about 5.9:1 contrast for black body text, meeting WCAG AA.
Questions about #128fd4
What is #128fd4 in RGB, HSL and CMYK?
In RGB, #128fd4 is rgb(18, 143, 212), in HSL hsl(201, 84%, 45%) and in CMYK 92%, 33%, 0%, 17%.
What colors pair well with #128fd4?
For balanced interfaces, pair #128fd4 with charcoal or warm white; a pale cyan tint keeps the palette coordinated without competing with the blue in buttons, links, cards, and supporting graphics.
Where does #128fd4 work best in a design?
Its medium-light, saturated blue works best as a supporting accent for buttons, links, dashboards, and status elements, while charcoal or warm white backgrounds keep a full-page layout from feeling too intense.
Is #128fd4 readable on white or black?
#128fd4 has a 3.55:1 contrast ratio on white and 5.90:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.