#1B548F#1B548F

#1B548F is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.1% C 0.113 H 252.6°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B548F
RGB	rgb(27, 84, 143)
HSL	hsl(211, 68%, 33%)
HSV	hsv(211, 81%, 56%)
CMYK	cmyk(81.1%, 41.3%, 0%, 43.9%)
CIE-LAB	lab(35.11, 3.96, -37.80)
CIE-LCH	lch(35.11, 38.01, 275.98°)
OKLab	oklab(44.12% -0.0338 -0.108)
OKLCH	oklch(44.12% 0.113 252.6)
XYZ	xyz(8.5784, 8.5558, 27.1806)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B548F #8F561B

analogous

#1B8E8F #1B548F #1C1B8F

triadic

#1B548F #8F1B54 #548F1B

tetradic

#1B548F #8F1B8E #8F561B #1B8F1C

square

#1B548F #8F1B8E #8F561B #1B8F1C

split-complementary

#1B548F #8F1C1B #8E8F1B

monochromatic

#081828 #11365C #1B548F #2572C2 #4891DC

Accessibility & contrast

On white

7.75

#1B548F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1B548F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B548F

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B548F	#FFFFFF	#000000	##FFFFFF
##1B548F	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375891

Deuteranopia (green-blind)

#244E8E

Tritanopia (blue-blind)

#00626A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b548f;
/* rgb */ color: rgb(27, 84, 143);
/* oklch */ color: oklch(44.1% 0.113 252.6);

Tailwind

colors: {
  custom: {
    50: '#6b83b0',
    500: '#1b548f',
    950: '#000000',
  },
}

SCSS

$custom: #1b548f;
$custom-light: #6b83b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b548f",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 143
  },
  "hsl": {
    "h": 210.517,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.44124,
    "c": 0.11322,
    "h": 252.6
  },
  "luminance": 0.08557
}

Semantic roles & 50–950 ramp

primary

#1B548F

secondary

#BE8448

accent

#953DEB

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1B548F

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

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