#427D9B#427D9B

#427D9B is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.2% C 0.077 H 232.5°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#427D9B
RGB	rgb(66, 125, 155)
HSL	hsl(200, 40%, 43%)
HSV	hsv(200, 57%, 61%)
CMYK	cmyk(57.4%, 19.4%, 0%, 39.2%)
CIE-LAB	lab(49.73, -10.17, -21.96)
CIE-LCH	lch(49.73, 24.20, 245.16°)
OKLab	oklab(56.23% -0.0469 -0.0612)
OKLCH	oklch(56.23% 0.077 232.5)
XYZ	xyz(15.4945, 18.1906, 33.6986)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427D9B #9B6042

analogous

#429B8C #427D9B #42509B

triadic

#427D9B #9B427D #7D9B42

tetradic

#427D9B #8C429B #9B6042 #509B42

square

#427D9B #8C429B #9B6042 #509B42

split-complementary

#427D9B #9B4250 #9B8C42

monochromatic

#1D3845 #305A70 #427D9B #5F9CBB #8AB7CD

Accessibility & contrast

On white

4.53

#427D9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#427D9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427D9B

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427D9B	#FFFFFF	#000000	##000000
##427D9B	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7C9C

Deuteranopia (green-blind)

#62729B

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #427d9b;
/* rgb */ color: rgb(66, 125, 155);
/* oklch */ color: oklch(56.2% 0.077 232.5);

Tailwind

colors: {
  custom: {
    50: '#7ea2b8',
    500: '#427d9b',
    950: '#000000',
  },
}

SCSS

$custom: #427d9b;
$custom-light: #7ea2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#427d9b",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 155
  },
  "hsl": {
    "h": 200.225,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.56232,
    "c": 0.07713,
    "h": 232.5
  },
  "luminance": 0.18192
}

Semantic roles & 50–950 ramp

primary

#427D9B

secondary

#B89381

accent

#8058D0

background

#F8FAFB

surface

#EFF3F6

border

#CACDD0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #427D9B

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

Preview Lab → · Contrast checker → · Palette generator →