#1B4C7D#1B4C7D

#1B4C7D is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 41.0% C 0.097 H 251.5°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C7D
RGB	rgb(27, 76, 125)
HSL	hsl(210, 64%, 30%)
HSV	hsv(210, 78%, 49%)
CMYK	cmyk(78.4%, 39.2%, 0%, 51%)
CIE-LAB	lab(31.54, 2.02, -32.43)
CIE-LCH	lch(31.54, 32.49, 273.57°)
OKLab	oklab(40.98% -0.031 -0.0924)
OKLCH	oklch(40.98% 0.097 251.5)
XYZ	xyz(6.7367, 6.8818, 20.3713)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C7D #7D4C1B

analogous

#1B7D7D #1B4C7D #1B1B7D

triadic

#1B4C7D #7D1B4C #4C7D1B

tetradic

#1B4C7D #7D1B7D #7D4C1B #1B7D1B

square

#1B4C7D #7D1B7D #7D4C1B #1B7D1B

split-complementary

#1B4C7D #7D1B1B #7D7D1B

monochromatic

#050F19 #102D4B #1B4C7D #266BAF #3D89D5

Accessibility & contrast

On white

8.84

#1B4C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C7D

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C7D	#FFFFFF	#000000	##FFFFFF
##1B4C7D	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354F7F

Deuteranopia (green-blind)

#26467C

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4c7d;
/* rgb */ color: rgb(27, 76, 125);
/* oklch */ color: oklch(41.0% 0.097 251.5);

Tailwind

colors: {
  custom: {
    50: '#677da3',
    500: '#1b4c7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c7d;
$custom-light: #677da3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c7d",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 125
  },
  "hsl": {
    "h": 210,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.4098,
    "c": 0.09749,
    "h": 251.5
  },
  "luminance": 0.06883
}

Semantic roles & 50–950 ramp

primary

#1B4C7D

secondary

#B17A43

accent

#9440E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4C7D

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

Preview Lab → · Contrast checker → · Palette generator →