#1B4572#1B4572

#1B4572 is a dark, moderate cyan. Relative luminance 0.057; OKLCH L 38.5% C 0.090 H 252.6°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B4572
RGB	rgb(27, 69, 114)
HSL	hsl(211, 62%, 28%)
HSV	hsv(211, 76%, 45%)
CMYK	cmyk(76.3%, 39.5%, 0%, 55.3%)
CIE-LAB	lab(28.65, 2.28, -30.12)
CIE-LCH	lch(28.65, 30.20, 274.33°)
OKLab	oklab(38.51% -0.0269 -0.0858)
OKLCH	oklch(38.51% 0.09 252.6)
XYZ	xyz(5.6162, 5.7035, 16.7212)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4572 #72481B

analogous

#1B7172 #1B4572 #1C1B72

triadic

#1B4572 #721B45 #45721B

tetradic

#1B4572 #721B71 #72481B #1B721C

square

#1B4572 #721B71 #72481B #1B721C

split-complementary

#1B4572 #721C1B #71721B

monochromatic

#060F19 #0F2741 #1B4572 #2763A3 #3881D0

Accessibility & contrast

On white

9.81

#1B4572 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B4572 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4572

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4572	#FFFFFF	#000000	##FFFFFF
##1B4572	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304874

Deuteranopia (green-blind)

#234071

Tritanopia (blue-blind)

#005056

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4572;
/* rgb */ color: rgb(27, 69, 114);
/* oklch */ color: oklch(38.5% 0.090 252.6);

Tailwind

colors: {
  custom: {
    50: '#64789b',
    500: '#1b4572',
    950: '#000000',
  },
}

SCSS

$custom: #1b4572;
$custom-light: #64789b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4572",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 114
  },
  "hsl": {
    "h": 211.034,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.38512,
    "c": 0.08991,
    "h": 252.6
  },
  "luminance": 0.05704
}

Semantic roles & 50–950 ramp

primary

#1B4572

secondary

#A77642

accent

#9743E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4572

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

Preview Lab → · Contrast checker → · Palette generator →