#1B4D7C#1B4D7C

#1B4D7C is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.2% C 0.095 H 250.2°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D7C
RGB	rgb(27, 77, 124)
HSL	hsl(209, 64%, 30%)
HSV	hsv(209, 78%, 49%)
CMYK	cmyk(78.2%, 37.9%, 0%, 51.4%)
CIE-LAB	lab(31.80, 0.96, -31.40)
CIE-LCH	lch(31.80, 31.41, 271.76°)
OKLab	oklab(41.16% -0.0322 -0.0894)
OKLCH	oklch(41.16% 0.095 250.2)
XYZ	xyz(6.7426, 6.9952, 20.0597)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D7C #7C4A1B

analogous

#1B7C7B #1B4D7C #1B1D7C

triadic

#1B4D7C #7C1B4D #4D7C1B

tetradic

#1B4D7C #7B1B7C #7C4A1B #1D7C1B

square

#1B4D7C #7B1B7C #7C4A1B #1D7C1B

split-complementary

#1B4D7C #7C1B1D #7C7B1B

monochromatic

#051019 #102E4A #1B4D7C #266CAE #3D8BD5

Accessibility & contrast

On white

8.75

#1B4D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D7C

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D7C	#FFFFFF	#000000	##FFFFFF
##1B4D7C	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37507E

Deuteranopia (green-blind)

#29477B

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4d7c;
/* rgb */ color: rgb(27, 77, 124);
/* oklch */ color: oklch(41.2% 0.095 250.2);

Tailwind

colors: {
  custom: {
    50: '#667ea2',
    500: '#1b4d7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d7c;
$custom-light: #667ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d7c",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 124
  },
  "hsl": {
    "h": 209.072,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.41164,
    "c": 0.09502,
    "h": 250.2
  },
  "luminance": 0.06996
}

Semantic roles & 50–950 ramp

primary

#1B4D7C

secondary

#B07843

accent

#9141E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D7C

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

Preview Lab → · Contrast checker → · Palette generator →