#1B548B#1B548B

#1B548B is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.9% C 0.108 H 251.1°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B548B
RGB	rgb(27, 84, 139)
HSL	hsl(209, 67%, 33%)
HSV	hsv(209, 81%, 55%)
CMYK	cmyk(80.6%, 39.6%, 0%, 45.5%)
CIE-LAB	lab(34.88, 2.36, -35.74)
CIE-LCH	lch(34.88, 35.82, 273.78°)
OKLab	oklab(43.86% -0.0348 -0.102)
OKLCH	oklch(43.86% 0.108 251.1)
XYZ	xyz(8.2808, 8.4367, 25.6131)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B548B #8B521B

analogous

#1B8B8A #1B548B #1B1C8B

triadic

#1B548B #8B1B54 #548B1B

tetradic

#1B548B #8A1B8B #8B521B #1C8B1B

square

#1B548B #8A1B8B #8B521B #1C8B1B

split-complementary

#1B548B #8B1B1C #8B8A1B

monochromatic

#071625 #113558 #1B548B #2573BE #4592DB

Accessibility & contrast

On white

7.81

#1B548B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B548B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B548B

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B548B	#FFFFFF	#000000	##FFFFFF
##1B548B	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A588D

Deuteranopia (green-blind)

#284D8A

Tritanopia (blue-blind)

#006168

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b548b;
/* rgb */ color: rgb(27, 84, 139);
/* oklch */ color: oklch(43.9% 0.108 251.1);

Tailwind

colors: {
  custom: {
    50: '#6a83ad',
    500: '#1b548b',
    950: '#000000',
  },
}

SCSS

$custom: #1b548b;
$custom-light: #6a83ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b548b",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 139
  },
  "hsl": {
    "h": 209.464,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.43861,
    "c": 0.10779,
    "h": 251.1
  },
  "luminance": 0.08438
}

Semantic roles & 50–950 ramp

primary

#1B548B

secondary

#BC8045

accent

#923DEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B548B

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

Preview Lab → · Contrast checker → · Palette generator →