#1B548C#1B548C

#1B548C is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.109 H 251.5°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B548C
RGB	rgb(27, 84, 140)
HSL	hsl(210, 68%, 33%)
HSV	hsv(210, 81%, 55%)
CMYK	cmyk(80.7%, 40%, 0%, 45.1%)
CIE-LAB	lab(34.94, 2.76, -36.26)
CIE-LCH	lch(34.94, 36.36, 274.35°)
OKLab	oklab(43.93% -0.0346 -0.1035)
OKLCH	oklch(43.93% 0.109 251.5)
XYZ	xyz(8.3542, 8.4661, 25.9997)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B548C #8C531B

analogous

#1B8C8C #1B548C #1B1B8C

triadic

#1B548C #8C1B54 #548C1B

tetradic

#1B548C #8C1B8C #8C531B #1B8C1B

square

#1B548C #8C1B8C #8C531B #1B8C1B

split-complementary

#1B548C #8C1B1B #8C8C1B

monochromatic

#071625 #113559 #1B548C #2573BF #4691DB

Accessibility & contrast

On white

7.80

#1B548C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B548C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B548C

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B548C	#FFFFFF	#000000	##FFFFFF
##1B548C	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39588E

Deuteranopia (green-blind)

#274D8B

Tritanopia (blue-blind)

#006169

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b548c;
/* rgb */ color: rgb(27, 84, 140);
/* oklch */ color: oklch(43.9% 0.109 251.5);

Tailwind

colors: {
  custom: {
    50: '#6a83ae',
    500: '#1b548c',
    950: '#000000',
  },
}

SCSS

$custom: #1b548c;
$custom-light: #6a83ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b548c",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 140
  },
  "hsl": {
    "h": 209.735,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.43926,
    "c": 0.10914,
    "h": 251.5
  },
  "luminance": 0.08467
}

Semantic roles & 50–950 ramp

primary

#1B548C

secondary

#BD8146

accent

#933DEB

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B548C

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

Preview Lab → · Contrast checker → · Palette generator →