#1B4D70#1B4D70

#1B4D70 is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.4% C 0.079 H 243.0°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D70
RGB	rgb(27, 77, 112)
HSL	hsl(205, 61%, 27%)
HSV	hsv(205, 76%, 44%)
CMYK	cmyk(75.9%, 31.2%, 0%, 56.1%)
CIE-LAB	lab(31.14, -3.77, -24.93)
CIE-LCH	lch(31.14, 25.21, 261.41°)
OKLab	oklab(40.43% -0.036 -0.0705)
OKLCH	oklch(40.43% 0.079 243)
XYZ	xyz(6.0294, 6.7099, 16.3035)
Luminance	0.0671 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D70 #703E1B

analogous

#1B7069 #1B4D70 #1B2370

triadic

#1B4D70 #701B4D #4D701B

tetradic

#1B4D70 #691B70 #703E1B #23701B

square

#1B4D70 #691B70 #703E1B #23701B

split-complementary

#1B4D70 #701B23 #70691B

monochromatic

#061119 #0F2B3F #1B4D70 #276FA1 #3790CF

Accessibility & contrast

On white

8.97

#1B4D70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1B4D70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D70

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D70	#FFFFFF	#000000	##FFFFFF
##1B4D70	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4E72

Deuteranopia (green-blind)

#31466F

Tritanopia (blue-blind)

#005659

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4d70;
/* rgb */ color: rgb(27, 77, 112);
/* oklch */ color: oklch(40.4% 0.079 243.0);

Tailwind

colors: {
  custom: {
    50: '#647e99',
    500: '#1b4d70',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d70;
$custom-light: #647e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d70",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 112
  },
  "hsl": {
    "h": 204.706,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.4043,
    "c": 0.07917,
    "h": 243
  },
  "luminance": 0.06711
}

Semantic roles & 50–950 ramp

primary

#1B4D70

secondary

#A56B42

accent

#8644E4

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4D70

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

Preview Lab → · Contrast checker → · Palette generator →