#1B4A7B#1B4A7B

#1B4A7B is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.4% C 0.097 H 252.3°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A7B
RGB	rgb(27, 74, 123)
HSL	hsl(211, 64%, 29%)
HSV	hsv(211, 78%, 48%)
CMYK	cmyk(78%, 39.8%, 0%, 51.8%)
CIE-LAB	lab(30.78, 2.55, -32.38)
CIE-LCH	lch(30.78, 32.48, 274.50°)
OKLab	oklab(40.35% -0.0295 -0.0923)
OKLCH	oklch(40.35% 0.097 252.3)
XYZ	xyz(6.4746, 6.5599, 19.6600)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A7B #7B4C1B

analogous

#1B7A7B #1B4A7B #1C1B7B

triadic

#1B4A7B #7B1B4A #4A7B1B

tetradic

#1B4A7B #7B1B7A #7B4C1B #1B7B1C

square

#1B4A7B #7B1B7A #7B4C1B #1B7B1C

split-complementary

#1B4A7B #7B1C1B #7A7B1B

monochromatic

#060F19 #102C49 #1B4A7B #2668AD #3C87D4

Accessibility & contrast

On white

9.08

#1B4A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A7B

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A7B	#FFFFFF	#000000	##FFFFFF
##1B4A7B	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334D7D

Deuteranopia (green-blind)

#24447A

Tritanopia (blue-blind)

#00565C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4a7b;
/* rgb */ color: rgb(27, 74, 123);
/* oklch */ color: oklch(40.4% 0.097 252.3);

Tailwind

colors: {
  custom: {
    50: '#667ca1',
    500: '#1b4a7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a7b;
$custom-light: #667ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a7b",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 123
  },
  "hsl": {
    "h": 210.625,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.40352,
    "c": 0.09694,
    "h": 252.3
  },
  "luminance": 0.06561
}

Semantic roles & 50–950 ramp

primary

#1B4A7B

secondary

#AF7A43

accent

#9641E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#07090F

muted

#7A7B7E

Preview Lab

Preview with #1B4A7B

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

Preview Lab → · Contrast checker → · Palette generator →