#1B4B7C#1B4B7C

#1B4B7C is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.7% C 0.097 H 251.9°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B7C
RGB	rgb(27, 75, 124)
HSL	hsl(210, 64%, 30%)
HSV	hsv(210, 78%, 49%)
CMYK	cmyk(78.2%, 39.5%, 0%, 51.4%)
CIE-LAB	lab(31.16, 2.29, -32.41)
CIE-LCH	lch(31.16, 32.49, 274.04°)
OKLab	oklab(40.67% -0.0302 -0.0924)
OKLCH	oklch(40.67% 0.097 251.9)
XYZ	xyz(6.6048, 6.7196, 20.0138)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B7C #7C4C1B

analogous

#1B7C7C #1B4B7C #1C1B7C

triadic

#1B4B7C #7C1B4B #4B7C1B

tetradic

#1B4B7C #7C1B7C #7C4C1B #1B7C1C

square

#1B4B7C #7C1B7C #7C4C1B #1B7C1C

split-complementary

#1B4B7C #7C1C1B #7C7C1B

monochromatic

#050F19 #102D4A #1B4B7C #2669AE #3D88D5

Accessibility & contrast

On white

8.96

#1B4B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1B4B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B7C

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B7C	#FFFFFF	#000000	##FFFFFF
##1B4B7C	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344E7E

Deuteranopia (green-blind)

#25457B

Tritanopia (blue-blind)

#00575D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4b7c;
/* rgb */ color: rgb(27, 75, 124);
/* oklch */ color: oklch(40.7% 0.097 251.9);

Tailwind

colors: {
  custom: {
    50: '#667ca2',
    500: '#1b4b7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b7c;
$custom-light: #667ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b7c",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 124
  },
  "hsl": {
    "h": 210.309,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.40666,
    "c": 0.09721,
    "h": 251.9
  },
  "luminance": 0.0672
}

Semantic roles & 50–950 ramp

primary

#1B4B7C

secondary

#B07A43

accent

#9541E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4B7C

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

Preview Lab → · Contrast checker → · Palette generator →