#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
RGBrgb(66, 125, 155)
HSLhsl(200, 40%, 43%)
HSVhsv(200, 57%, 61%)
CMYKcmyk(57.4%, 19.4%, 0%, 39.2%)
CIE-LABlab(49.73, -10.17, -21.96)
CIE-LCHlch(49.73, 24.20, 245.16°)
OKLaboklab(56.23% -0.0469 -0.0612)
OKLCHoklch(56.23% 0.077 232.5)
XYZxyz(15.4945, 18.1906, 33.6986)
Luminance0.1819 (WCAG relative)
Temperaturecool
Familycyan

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
##427D9B1.004.534.644.64
#FFFFFF4.531.0021.0021.00
#0000004.6421.001.001.00
##0000004.6421.001.001.00

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 →

#427D9B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva