#1B548D#1B548D

#1B548D is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 44.0% C 0.110 H 251.9°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B548D
RGB	rgb(27, 84, 141)
HSL	hsl(210, 68%, 33%)
HSV	hsv(210, 81%, 55%)
CMYK	cmyk(80.9%, 40.4%, 0%, 44.7%)
CIE-LAB	lab(34.99, 3.16, -36.77)
CIE-LCH	lch(34.99, 36.91, 274.91°)
OKLab	oklab(43.99% -0.0343 -0.105)
OKLCH	oklch(43.99% 0.11 251.9)
XYZ	xyz(8.4282, 8.4957, 26.3898)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B548D #8D541B

analogous

#1B8D8D #1B548D #1B1B8D

triadic

#1B548D #8D1B54 #548D1B

tetradic

#1B548D #8D1B8D #8D541B #1B8D1B

square

#1B548D #8D1B8D #8D541B #1B8D1B

split-complementary

#1B548D #8D1B1B #8D8D1B

monochromatic

#071726 #11355A #1B548D #2573C0 #4791DC

Accessibility & contrast

On white

7.78

#1B548D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1B548D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B548D

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B548D	#FFFFFF	#000000	##FFFFFF
##1B548D	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39588F

Deuteranopia (green-blind)

#264E8C

Tritanopia (blue-blind)

#006269

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b548d;
/* rgb */ color: rgb(27, 84, 141);
/* oklch */ color: oklch(44.0% 0.110 251.9);

Tailwind

colors: {
  custom: {
    50: '#6a83af',
    500: '#1b548d',
    950: '#000000',
  },
}

SCSS

$custom: #1b548d;
$custom-light: #6a83af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b548d",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 141
  },
  "hsl": {
    "h": 210,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43992,
    "c": 0.11049,
    "h": 251.9
  },
  "luminance": 0.08497
}

Semantic roles & 50–950 ramp

primary

#1B548D

secondary

#BD8246

accent

#943DEB

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B548D

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

Preview Lab → · Contrast checker → · Palette generator →