#1A357B#1A357B

#1A357B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.124 H 264.8°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#1A357B
RGB	rgb(26, 53, 123)
HSL	hsl(223, 65%, 29%)
HSV	hsv(223, 79%, 48%)
CMYK	cmyk(78.9%, 56.9%, 0%, 51.8%)
CIE-LAB	lab(24.31, 16.96, -42.79)
CIE-LCH	lch(24.31, 46.03, 291.62°)
OKLab	oklab(35.36% -0.0113 -0.1233)
OKLCH	oklch(35.36% 0.124 264.8)
XYZ	xyz(5.2730, 4.1953, 19.2669)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A357B #7B601A

analogous

#1A667B #1A357B #301A7B

triadic

#1A357B #7B1A35 #357B1A

tetradic

#1A357B #7B1A66 #7B601A #1A7B30

square

#1A357B #7B1A66 #7B601A #1A7B30

split-complementary

#1A357B #7B301A #667B1A

monochromatic

#050B19 #0F1F48 #1A357B #254BAE #3A65D5

Accessibility & contrast

On white

11.42

#1A357B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1A357B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A357B

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A357B	#FFFFFF	#000000	##FFFFFF
##1A357B	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7D

Deuteranopia (green-blind)

#00357A

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a357b;
/* rgb */ color: rgb(26, 53, 123);
/* oklch */ color: oklch(35.4% 0.124 264.8);

Tailwind

colors: {
  custom: {
    50: '#676ba2',
    500: '#1a357b',
    950: '#000000',
  },
}

SCSS

$custom: #1a357b;
$custom-light: #676ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a357b",
  "rgb": {
    "r": 26,
    "g": 53,
    "b": 123
  },
  "hsl": {
    "h": 223.299,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35359,
    "c": 0.12386,
    "h": 264.8
  },
  "luminance": 0.04196
}

Semantic roles & 50–950 ramp

primary

#1A357B

secondary

#AF9142

accent

#B940E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1A357B

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

Preview Lab → · Contrast checker → · Palette generator →