#1B4A7C#1B4A7C

#1B4A7C is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.4% C 0.098 H 252.7°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A7C
RGB	rgb(27, 74, 124)
HSL	hsl(211, 64%, 30%)
HSV	hsv(211, 78%, 49%)
CMYK	cmyk(78.2%, 40.3%, 0%, 51.4%)
CIE-LAB	lab(30.84, 2.95, -32.91)
CIE-LCH	lch(30.84, 33.04, 275.13°)
OKLab	oklab(40.42% -0.0293 -0.0939)
OKLCH	oklch(40.42% 0.098 252.7)
XYZ	xyz(6.5375, 6.5851, 19.9914)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A7C #7C4D1B

analogous

#1B7B7C #1B4A7C #1D1B7C

triadic

#1B4A7C #7C1B4A #4A7C1B

tetradic

#1B4A7C #7C1B7B #7C4D1B #1B7C1D

square

#1B4A7C #7C1B7B #7C4D1B #1B7C1D

split-complementary

#1B4A7C #7C1D1B #7B7C1B

monochromatic

#050F19 #102C4A #1B4A7C #2668AE #3D86D5

Accessibility & contrast

On white

9.06

#1B4A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1B4A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A7C

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A7C	#FFFFFF	#000000	##FFFFFF
##1B4A7C	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324D7E

Deuteranopia (green-blind)

#23457B

Tritanopia (blue-blind)

#00565D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4a7c;
/* rgb */ color: rgb(27, 74, 124);
/* oklch */ color: oklch(40.4% 0.098 252.7);

Tailwind

colors: {
  custom: {
    50: '#667ca2',
    500: '#1b4a7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a7c;
$custom-light: #667ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a7c",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 124
  },
  "hsl": {
    "h": 210.928,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.40418,
    "c": 0.09833,
    "h": 252.7
  },
  "luminance": 0.06586
}

Semantic roles & 50–950 ramp

primary

#1B4A7C

secondary

#B07B43

accent

#9641E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4A7C

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

Preview Lab → · Contrast checker → · Palette generator →