#1B4375#1B4375

#1B4375 is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 38.2% C 0.097 H 255.5°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX#1B4375
RGBrgb(27, 67, 117)
HSLhsl(213, 63%, 28%)
HSVhsv(213, 77%, 46%)
CMYKcmyk(76.9%, 42.7%, 0%, 54.1%)
CIE-LABlab(28.20, 4.85, -32.73)
CIE-LCHlch(28.20, 33.09, 278.43°)
OKLaboklab(38.22% -0.0241 -0.0935)
OKLCHoklch(38.22% 0.097 255.5)
XYZxyz(5.6689, 5.5310, 17.5950)
Luminance0.0553 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4375 #754D1B
analogous
#1B7075 #1B4375 #201B75
triadic
#1B4375 #751B43 #43751B
tetradic
#1B4375 #751B70 #754D1B #1B7520
square
#1B4375 #751B70 #754D1B #1B7520
split-complementary
#1B4375 #75201B #70751B
monochromatic
#060E19 #102743 #1B4375 #265FA7 #397DD1

Accessibility & contrast

On white

9.97
#1B4375 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.11
#1B4375 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4375
9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4375#FFFFFF#000000##FFFFFF
##1B43751.009.972.119.97
#FFFFFF9.971.0021.001.00
#0000002.1121.001.0021.00
##FFFFFF9.971.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2B4777
Deuteranopia (green-blind)
#1C3F74
Tritanopia (blue-blind)
#004F56
Achromatopsia (no color)
#434343

Design tokens & code

CSS
--color: #1b4375;
/* rgb */ color: rgb(27, 67, 117);
/* oklch */ color: oklch(38.2% 0.097 255.5);
Tailwind
colors: {
  custom: {
    50: '#65769d',
    500: '#1b4375',
    950: '#000000',
  },
}
SCSS
$custom: #1b4375;
$custom-light: #65769d;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4375",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 117
  },
  "hsl": {
    "h": 213.333,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.38217,
    "c": 0.09656,
    "h": 255.5
  },
  "luminance": 0.05532
}

Semantic roles & 50–950 ramp

primary
#1B4375
secondary
#A97C42
accent
#9D42E6
background
#F6F7F9
surface
#EBEDF2
border
#C6C8CC
text
#06080E
muted
#7A7B7E

Preview Lab

Preview with #1B4375

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4375 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva