#1B4F90#1B4F90

#1B4F90 is a dark, vivid cyan. Relative luminance 0.078; OKLCH L 43.0% C 0.120 H 256.0°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F90
RGB	rgb(27, 79, 144)
HSL	hsl(213, 68%, 34%)
HSV	hsv(213, 81%, 56%)
CMYK	cmyk(81.3%, 45.1%, 0%, 43.5%)
CIE-LAB	lab(33.64, 7.67, -40.76)
CIE-LCH	lch(33.64, 41.48, 280.66°)
OKLab	oklab(43% -0.0292 -0.1169)
OKLCH	oklch(43% 0.12 256)
XYZ	xyz(8.2801, 7.8376, 27.4566)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F90 #905C1B

analogous

#1B8990 #1B4F90 #211B90

triadic

#1B4F90 #901B4F #4F901B

tetradic

#1B4F90 #901B89 #905C1B #1B9021

square

#1B4F90 #901B89 #905C1B #1B9021

split-complementary

#1B4F90 #90211B #89901B

monochromatic

#081629 #11335C #1B4F90 #256BC4 #498ADD

Accessibility & contrast

On white

8.18

#1B4F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B4F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F90

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F90	#FFFFFF	#000000	##FFFFFF
##1B4F90	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5592

Deuteranopia (green-blind)

#154A8F

Tritanopia (blue-blind)

#005E68

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b4f90;
/* rgb */ color: rgb(27, 79, 144);
/* oklch */ color: oklch(43.0% 0.120 256.0);

Tailwind

colors: {
  custom: {
    50: '#6b7fb1',
    500: '#1b4f90',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f90;
$custom-light: #6b7fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f90",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 144
  },
  "hsl": {
    "h": 213.333,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.43,
    "c": 0.12045,
    "h": 256
  },
  "luminance": 0.07839
}

Semantic roles & 50–950 ramp

primary

#1B4F90

secondary

#BF8A48

accent

#9E3DEB

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080A11

muted

#7A7C80

Preview Lab

Preview with #1B4F90

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

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