#1B4470#1B4470

#1B4470 is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 38.1% C 0.088 H 252.5°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B4470
RGB	rgb(27, 68, 112)
HSL	hsl(211, 61%, 27%)
HSV	hsv(211, 76%, 44%)
CMYK	cmyk(75.9%, 39.3%, 0%, 56.1%)
CIE-LAB	lab(28.21, 2.15, -29.55)
CIE-LCH	lch(28.21, 29.63, 274.17°)
OKLab	oklab(38.13% -0.0265 -0.0841)
OKLCH	oklch(38.13% 0.088 252.5)
XYZ	xyz(5.4427, 5.5365, 16.1079)
Luminance	0.0554 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4470 #70471B

analogous

#1B6F70 #1B4470 #1D1B70

triadic

#1B4470 #701B44 #44701B

tetradic

#1B4470 #701B6F #70471B #1B701D

square

#1B4470 #701B6F #70471B #1B701D

split-complementary

#1B4470 #701D1B #6F701B

monochromatic

#060F19 #0F263F #1B4470 #2762A1 #3780CF

Accessibility & contrast

On white

9.96

#1B4470 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B4470 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4470

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4470	#FFFFFF	#000000	##FFFFFF
##1B4470	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304772

Deuteranopia (green-blind)

#233F6F

Tritanopia (blue-blind)

#004E54

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4470;
/* rgb */ color: rgb(27, 68, 112);
/* oklch */ color: oklch(38.1% 0.088 252.5);

Tailwind

colors: {
  custom: {
    50: '#647799',
    500: '#1b4470',
    950: '#000000',
  },
}

SCSS

$custom: #1b4470;
$custom-light: #647799;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4470",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 112
  },
  "hsl": {
    "h": 211.059,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.38129,
    "c": 0.0882,
    "h": 252.5
  },
  "luminance": 0.05537
}

Semantic roles & 50–950 ramp

primary

#1B4470

secondary

#A57542

accent

#9744E4

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4470

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

Preview Lab → · Contrast checker → · Palette generator →