#1A3A5B#1A3A5B

#1A3A5B is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.2% C 0.069 H 251.2°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A5B
RGB	rgb(26, 58, 91)
HSL	hsl(210, 56%, 23%)
HSV	hsv(210, 71%, 36%)
CMYK	cmyk(71.4%, 36.3%, 0%, 64.3%)
CIE-LAB	lab(23.67, 0.36, -23.21)
CIE-LCH	lch(23.67, 23.22, 270.89°)
OKLab	oklab(34.17% -0.0224 -0.0658)
OKLCH	oklch(34.17% 0.069 251.2)
XYZ	xyz(3.8267, 4.0007, 10.4660)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A5B #5B3B1A

analogous

#1A5A5B #1A3A5B #1B1A5B

triadic

#1A3A5B #5B1A3A #3A5B1A

tetradic

#1A3A5B #5B1A5A #5B3B1A #1A5B1B

square

#1A3A5B #5B1A5A #5B3B1A #1A5B1B

split-complementary

#1A3A5B #5B1B1A #5A5B1A

monochromatic

#070F18 #0C1C2B #1A3A5B #28588B #3577BA

Accessibility & contrast

On white

11.67

#1A3A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1A3A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A5B

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A5B	#FFFFFF	#000000	##FFFFFF
##1A3A5B	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3C5C

Deuteranopia (green-blind)

#22365A

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1a3a5b;
/* rgb */ color: rgb(26, 58, 91);
/* oklch */ color: oklch(34.2% 0.069 251.2);

Tailwind

colors: {
  custom: {
    50: '#5f6f89',
    500: '#1a3a5b',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a5b;
$custom-light: #5f6f89;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a5b",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 210.462,
    "s": 55.556,
    "l": 22.941
  },
  "oklch": {
    "l": 0.34166,
    "c": 0.06949,
    "h": 251.2
  },
  "luminance": 0.04001
}

Semantic roles & 50–950 ramp

primary

#1A3A5B

secondary

#916940

accent

#9549DF

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #1A3A5B

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

Preview Lab → · Contrast checker → · Palette generator →