#1B536E#1B536E

#1B536E is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 41.9% C 0.073 H 233.4°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B536E
RGB	rgb(27, 83, 110)
HSL	hsl(200, 61%, 27%)
HSV	hsv(200, 75%, 43%)
CMYK	cmyk(75.5%, 24.5%, 0%, 56.9%)
CIE-LAB	lab(33.02, -8.30, -20.74)
CIE-LCH	lch(33.02, 22.34, 248.19°)
OKLab	oklab(41.89% -0.0433 -0.0583)
OKLCH	oklch(41.89% 0.073 233.4)
XYZ	xyz(6.3586, 7.5446, 15.8700)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B536E #6E361B

analogous

#1B6E60 #1B536E #1B2A6E

triadic

#1B536E #6E1B53 #536E1B

tetradic

#1B536E #601B6E #6E361B #2A6E1B

square

#1B536E #601B6E #6E361B #2A6E1B

split-complementary

#1B536E #6E1B2A #6E601B

monochromatic

#061319 #0F2E3D #1B536E #27789F #369CCE

Accessibility & contrast

On white

8.37

#1B536E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B536E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B536E

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B536E	#FFFFFF	#000000	##FFFFFF
##1B536E	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46526F

Deuteranopia (green-blind)

#3A4A6E

Tritanopia (blue-blind)

#005A5C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b536e;
/* rgb */ color: rgb(27, 83, 110);
/* oklch */ color: oklch(41.9% 0.073 233.4);

Tailwind

colors: {
  custom: {
    50: '#648397',
    500: '#1b536e',
    950: '#000000',
  },
}

SCSS

$custom: #1b536e;
$custom-light: #648397;
$custom-dark: #000000;

JSON

{
  "hex": "#1b536e",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 110
  },
  "hsl": {
    "h": 199.518,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.41888,
    "c": 0.07262,
    "h": 233.4
  },
  "luminance": 0.07545
}

Semantic roles & 50–950 ramp

primary

#1B536E

secondary

#A36142

accent

#7844E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0D

muted

#7A7C7E

Preview Lab

Preview with #1B536E

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

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