#427BA5#427BA5

#427BA5 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.2% C 0.089 H 242.5°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#427BA5
RGB	rgb(66, 123, 165)
HSL	hsl(205, 43%, 45%)
HSV	hsv(205, 60%, 65%)
CMYK	cmyk(60%, 25.5%, 0%, 35.3%)
CIE-LAB	lab(49.54, -5.76, -28.08)
CIE-LCH	lch(49.54, 28.66, 258.41°)
OKLab	oklab(56.23% -0.041 -0.0788)
OKLCH	oklch(56.23% 0.089 242.5)
XYZ	xyz(16.1187, 18.0393, 38.2225)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BA5 #A56C42

analogous

#42A59E #427BA5 #4249A5

triadic

#427BA5 #A5427B #7BA542

tetradic

#427BA5 #9E42A5 #A56C42 #49A542

square

#427BA5 #9E42A5 #A56C42 #49A542

split-complementary

#427BA5 #A54249 #A59E42

monochromatic

#1F3A4E #315A79 #427BA5 #6399C1 #8FB6D2

Accessibility & contrast

On white

4.56

#427BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#427BA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BA5

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BA5	#FFFFFF	#000000	##000000
##427BA5	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA7

Deuteranopia (green-blind)

#5B71A4

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #427ba5;
/* rgb */ color: rgb(66, 123, 165);
/* oklch */ color: oklch(56.2% 0.089 242.5);

Tailwind

colors: {
  custom: {
    50: '#7fa1c0',
    500: '#427ba5',
    950: '#000000',
  },
}

SCSS

$custom: #427ba5;
$custom-light: #7fa1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#427ba5",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 165
  },
  "hsl": {
    "h": 205.455,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56226,
    "c": 0.08881,
    "h": 242.5
  },
  "luminance": 0.18041
}

Semantic roles & 50–950 ramp

primary

#427BA5

secondary

#BD9D85

accent

#8A55D3

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0B0E12

muted

#7C7E81

Preview Lab

Preview with #427BA5

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →