#1B4F71#1B4F71

#1B4F71 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.0% C 0.079 H 241.3°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F71
RGB	rgb(27, 79, 113)
HSL	hsl(204, 61%, 27%)
HSV	hsv(204, 76%, 44%)
CMYK	cmyk(76.1%, 30.1%, 0%, 55.7%)
CIE-LAB	lab(31.84, -4.65, -24.45)
CIE-LCH	lch(31.84, 24.89, 259.22°)
OKLab	oklab(41.01% -0.0378 -0.0691)
OKLCH	oklch(41.01% 0.079 241.3)
XYZ	xyz(6.2275, 7.0165, 16.6457)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F71 #713D1B

analogous

#1B7168 #1B4F71 #1B2471

triadic

#1B4F71 #711B4F #4F711B

tetradic

#1B4F71 #681B71 #713D1B #24711B

square

#1B4F71 #681B71 #713D1B #24711B

split-complementary

#1B4F71 #711B24 #71681B

monochromatic

#061119 #0F2C40 #1B4F71 #2772A2 #3793CF

Accessibility & contrast

On white

8.74

#1B4F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F71

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F71	#FFFFFF	#000000	##FFFFFF
##1B4F71	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F4F73

Deuteranopia (green-blind)

#334770

Tritanopia (blue-blind)

#00575B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4f71;
/* rgb */ color: rgb(27, 79, 113);
/* oklch */ color: oklch(41.0% 0.079 241.3);

Tailwind

colors: {
  custom: {
    50: '#64809a',
    500: '#1b4f71',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f71;
$custom-light: #64809a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f71",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 113
  },
  "hsl": {
    "h": 203.721,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.41006,
    "c": 0.07876,
    "h": 241.3
  },
  "luminance": 0.07017
}

Semantic roles & 50–950 ramp

primary

#1B4F71

secondary

#A66942

accent

#8343E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F71

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

Preview Lab → · Contrast checker → · Palette generator →