#1B5488#1B5488

#1B5488 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.7% C 0.104 H 249.9°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B5488
RGB	rgb(27, 84, 136)
HSL	hsl(209, 67%, 32%)
HSV	hsv(209, 80%, 53%)
CMYK	cmyk(80.1%, 38.2%, 0%, 46.7%)
CIE-LAB	lab(34.70, 1.17, -34.19)
CIE-LCH	lch(34.70, 34.21, 271.96°)
OKLab	oklab(43.67% -0.0356 -0.0974)
OKLCH	oklch(43.67% 0.104 249.9)
XYZ	xyz(8.0646, 8.3503, 24.4745)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5488 #884F1B

analogous

#1B8886 #1B5488 #1B1E88

triadic

#1B5488 #881B54 #54881B

tetradic

#1B5488 #861B88 #884F1B #1E881B

square

#1B5488 #861B88 #884F1B #1E881B

split-complementary

#1B5488 #881B1E #88861B

monochromatic

#071522 #113455 #1B5488 #2574BB #4492DA

Accessibility & contrast

On white

7.86

#1B5488 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1B5488 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5488

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5488	#FFFFFF	#000000	##FFFFFF
##1B5488	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C578A

Deuteranopia (green-blind)

#2B4D87

Tritanopia (blue-blind)

#006067

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5488;
/* rgb */ color: rgb(27, 84, 136);
/* oklch */ color: oklch(43.7% 0.104 249.9);

Tailwind

colors: {
  custom: {
    50: '#6983ab',
    500: '#1b5488',
    950: '#000000',
  },
}

SCSS

$custom: #1b5488;
$custom-light: #6983ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5488",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 136
  },
  "hsl": {
    "h": 208.624,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.43668,
    "c": 0.10375,
    "h": 249.9
  },
  "luminance": 0.08351
}

Semantic roles & 50–950 ramp

primary

#1B5488

secondary

#BB7D44

accent

#903EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5488

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

Preview Lab → · Contrast checker → · Palette generator →