#1B4B88#1B4B88

#1B4B88 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.5% C 0.114 H 256.1°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B88
RGB	rgb(27, 75, 136)
HSL	hsl(214, 67%, 32%)
HSV	hsv(214, 80%, 53%)
CMYK	cmyk(80.1%, 44.9%, 0%, 46.7%)
CIE-LAB	lab(31.90, 7.13, -38.65)
CIE-LCH	lch(31.90, 39.30, 280.45°)
OKLab	oklab(41.48% -0.0273 -0.1107)
OKLCH	oklch(41.48% 0.114 256.1)
XYZ	xyz(7.4104, 7.0419, 24.2564)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B88 #88581B

analogous

#1B8288 #1B4B88 #221B88

triadic

#1B4B88 #881B4B #4B881B

tetradic

#1B4B88 #881B82 #88581B #1B8822

square

#1B4B88 #881B82 #88581B #1B8822

split-complementary

#1B4B88 #88221B #82881B

monochromatic

#071322 #112F55 #1B4B88 #2567BB #4486DA

Accessibility & contrast

On white

8.72

#1B4B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B88

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B88	#FFFFFF	#000000	##FFFFFF
##1B4B88	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C508A

Deuteranopia (green-blind)

#174687

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4b88;
/* rgb */ color: rgb(27, 75, 136);
/* oklch */ color: oklch(41.5% 0.114 256.1);

Tailwind

colors: {
  custom: {
    50: '#697cab',
    500: '#1b4b88',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b88;
$custom-light: #697cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b88",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 136
  },
  "hsl": {
    "h": 213.578,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.41484,
    "c": 0.11406,
    "h": 256.1
  },
  "luminance": 0.07043
}

Semantic roles & 50–950 ramp

primary

#1B4B88

secondary

#BB8744

accent

#9E3EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4B88

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

Preview Lab → · Contrast checker → · Palette generator →