#1A3577#1A3577

#1A3577 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.118 H 264.3°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#1A3577
RGB	rgb(26, 53, 119)
HSL	hsl(223, 64%, 28%)
HSV	hsv(223, 78%, 47%)
CMYK	cmyk(78.2%, 55.5%, 0%, 53.3%)
CIE-LAB	lab(23.99, 15.32, -40.77)
CIE-LCH	lch(23.99, 43.55, 290.60°)
OKLab	oklab(35.02% -0.0116 -0.1174)
OKLCH	oklch(35.02% 0.118 264.3)
XYZ	xyz(5.0277, 4.0972, 17.9750)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3577 #775C1A

analogous

#1A6377 #1A3577 #2D1A77

triadic

#1A3577 #771A35 #35771A

tetradic

#1A3577 #771A63 #775C1A #1A772D

square

#1A3577 #771A63 #775C1A #1A772D

split-complementary

#1A3577 #772D1A #63771A

monochromatic

#050B19 #0F1F45 #1A3577 #254BA9 #3865D3

Accessibility & contrast

On white

11.54

#1A3577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1A3577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3577

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3577	#FFFFFF	#000000	##FFFFFF
##1A3577	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#043E79

Deuteranopia (green-blind)

#003576

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1a3577;
/* rgb */ color: rgb(26, 53, 119);
/* oklch */ color: oklch(35.0% 0.118 264.3);

Tailwind

colors: {
  custom: {
    50: '#656b9f',
    500: '#1a3577',
    950: '#000000',
  },
}

SCSS

$custom: #1a3577;
$custom-light: #656b9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3577",
  "rgb": {
    "r": 26,
    "g": 53,
    "b": 119
  },
  "hsl": {
    "h": 222.581,
    "s": 64.138,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35019,
    "c": 0.11798,
    "h": 264.3
  },
  "luminance": 0.04098
}

Semantic roles & 50–950 ramp

primary

#1A3577

secondary

#AC8D41

accent

#B741E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1A3577

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

Preview Lab → · Contrast checker → · Palette generator →