#1B375E#1B375E

#1B375E is a dark, moderate cyan. Relative luminance 0.038; OKLCH L 33.6% C 0.077 H 257.1°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B375E
RGB	rgb(27, 55, 94)
HSL	hsl(215, 55%, 24%)
HSV	hsv(215, 71%, 37%)
CMYK	cmyk(71.3%, 41.5%, 0%, 63.1%)
CIE-LAB	lab(22.91, 3.83, -26.39)
CIE-LCH	lch(22.91, 26.66, 278.26°)
OKLab	oklab(33.64% -0.0172 -0.0751)
OKLCH	oklch(33.64% 0.077 257.1)
XYZ	xyz(3.8378, 3.7732, 11.1135)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B375E #5E421B

analogous

#1B585E #1B375E #201B5E

triadic

#1B375E #5E1B37 #375E1B

tetradic

#1B375E #5E1B58 #5E421B #1B5E20

square

#1B375E #5E1B58 #5E421B #1B5E20

split-complementary

#1B375E #5E201B #585E1B

monochromatic

#070E18 #0D1B2E #1B375E #29538E #366FBD

Accessibility & contrast

On white

11.97

#1B375E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B375E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B375E

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B375E	#FFFFFF	#000000	##FFFFFF
##1B375E	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263A60

Deuteranopia (green-blind)

#1C345D

Tritanopia (blue-blind)

#004046

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b375e;
/* rgb */ color: rgb(27, 55, 94);
/* oklch */ color: oklch(33.6% 0.077 257.1);

Tailwind

colors: {
  custom: {
    50: '#606d8c',
    500: '#1b375e',
    950: '#000000',
  },
}

SCSS

$custom: #1b375e;
$custom-light: #606d8c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b375e",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 94
  },
  "hsl": {
    "h": 214.925,
    "s": 55.372,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33638,
    "c": 0.07703,
    "h": 257.1
  },
  "luminance": 0.03774
}

Semantic roles & 50–950 ramp

primary

#1B375E

secondary

#947141

accent

#A049DF

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #1B375E

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

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