#1B4D7F#1B4D7F

#1B4D7F is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.4% C 0.099 H 251.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D7F
RGB	rgb(27, 77, 127)
HSL	hsl(210, 65%, 30%)
HSV	hsv(210, 79%, 50%)
CMYK	cmyk(78.7%, 39.4%, 0%, 50.2%)
CIE-LAB	lab(31.97, 2.16, -32.98)
CIE-LCH	lch(31.97, 33.05, 273.75°)
OKLab	oklab(41.36% -0.0314 -0.094)
OKLCH	oklch(41.36% 0.099 251.5)
XYZ	xyz(6.9352, 7.0723, 21.0741)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D7F #7F4D1B

analogous

#1B7F7F #1B4D7F #1B1B7F

triadic

#1B4D7F #7F1B4D #4D7F1B

tetradic

#1B4D7F #7F1B7F #7F4D1B #1B7F1B

square

#1B4D7F #7F1B7F #7F4D1B #1B7F1B

split-complementary

#1B4D7F #7F1B1B #7F7F1B

monochromatic

#06101A #102E4D #1B4D7F #266CB1 #3E8AD6

Accessibility & contrast

On white

8.70

#1B4D7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4D7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D7F

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D7F	#FFFFFF	#000000	##FFFFFF
##1B4D7F	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365081

Deuteranopia (green-blind)

#26477E

Tritanopia (blue-blind)

#005960

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4d7f;
/* rgb */ color: rgb(27, 77, 127);
/* oklch */ color: oklch(41.4% 0.099 251.5);

Tailwind

colors: {
  custom: {
    50: '#677ea4',
    500: '#1b4d7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d7f;
$custom-light: #677ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d7f",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 127
  },
  "hsl": {
    "h": 210,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.41358,
    "c": 0.09913,
    "h": 251.5
  },
  "luminance": 0.07073
}

Semantic roles & 50–950 ramp

primary

#1B4D7F

secondary

#B37B43

accent

#9440E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D7F

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

Preview Lab → · Contrast checker → · Palette generator →