#1B4071#1B4071

#1B4071 is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.2% C 0.094 H 256.5°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B4071
RGB	rgb(27, 64, 113)
HSL	hsl(214, 61%, 27%)
HSV	hsv(214, 76%, 44%)
CMYK	cmyk(76.1%, 43.4%, 0%, 55.7%)
CIE-LAB	lab(26.99, 5.28, -32.12)
CIE-LCH	lch(26.99, 32.55, 279.34°)
OKLab	oklab(37.2% -0.0221 -0.0917)
OKLCH	oklch(37.2% 0.094 256.5)
XYZ	xyz(5.2649, 5.0915, 16.3249)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4071 #714C1B

analogous

#1B6B71 #1B4071 #211B71

triadic

#1B4071 #711B40 #40711B

tetradic

#1B4071 #711B6B #714C1B #1B7121

square

#1B4071 #711B6B #714C1B #1B7121

split-complementary

#1B4071 #71211B #6B711B

monochromatic

#060E19 #0F2440 #1B4071 #275CA2 #3779CF

Accessibility & contrast

On white

10.40

#1B4071 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1B4071 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4071

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4071	#FFFFFF	#000000	##FFFFFF
##1B4071	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294473

Deuteranopia (green-blind)

#1A3C70

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b4071;
/* rgb */ color: rgb(27, 64, 113);
/* oklch */ color: oklch(37.2% 0.094 256.5);

Tailwind

colors: {
  custom: {
    50: '#64749a',
    500: '#1b4071',
    950: '#000000',
  },
}

SCSS

$custom: #1b4071;
$custom-light: #64749a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4071",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 113
  },
  "hsl": {
    "h": 214.186,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.372,
    "c": 0.09437,
    "h": 256.5
  },
  "luminance": 0.05092
}

Semantic roles & 50–950 ramp

primary

#1B4071

secondary

#A67B42

accent

#9F43E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4071

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

Preview Lab → · Contrast checker → · Palette generator →