#1B4E70#1B4E70

#1B4E70 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.7% C 0.078 H 241.8°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E70
RGB	rgb(27, 78, 112)
HSL	hsl(204, 61%, 27%)
HSV	hsv(204, 76%, 44%)
CMYK	cmyk(75.9%, 30.4%, 0%, 56.1%)
CIE-LAB	lab(31.47, -4.41, -24.42)
CIE-LCH	lch(31.47, 24.81, 259.77°)
OKLab	oklab(40.69% -0.0371 -0.069)
OKLCH	oklch(40.69% 0.078 241.8)
XYZ	xyz(6.0999, 6.8510, 16.3270)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E70 #703D1B

analogous

#1B7068 #1B4E70 #1B2470

triadic

#1B4E70 #701B4E #4E701B

tetradic

#1B4E70 #681B70 #703D1B #24701B

square

#1B4E70 #681B70 #703D1B #24701B

split-complementary

#1B4E70 #701B24 #70681B

monochromatic

#061119 #0F2C3F #1B4E70 #2770A1 #3792CF

Accessibility & contrast

On white

8.86

#1B4E70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B4E70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E70

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E70	#FFFFFF	#000000	##FFFFFF
##1B4E70	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E4F72

Deuteranopia (green-blind)

#33466F

Tritanopia (blue-blind)

#00565A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4e70;
/* rgb */ color: rgb(27, 78, 112);
/* oklch */ color: oklch(40.7% 0.078 241.8);

Tailwind

colors: {
  custom: {
    50: '#647f99',
    500: '#1b4e70',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e70;
$custom-light: #647f99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e70",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 112
  },
  "hsl": {
    "h": 204,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.40689,
    "c": 0.07834,
    "h": 241.8
  },
  "luminance": 0.06852
}

Semantic roles & 50–950 ramp

primary

#1B4E70

secondary

#A56A42

accent

#8444E4

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E70

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

Preview Lab → · Contrast checker → · Palette generator →