#1A3F74#1A3F74

#1A3F74 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.100 H 257.8°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F74
RGB	rgb(26, 63, 116)
HSL	hsl(215, 63%, 28%)
HSV	hsv(215, 78%, 45%)
CMYK	cmyk(77.6%, 45.7%, 0%, 54.5%)
CIE-LAB	lab(26.83, 7.05, -34.28)
CIE-LCH	lch(26.83, 35.00, 281.61°)
OKLab	oklab(37.13% -0.0212 -0.0981)
OKLCH	oklch(37.13% 0.1 257.8)
XYZ	xyz(5.3547, 5.0350, 17.2092)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F74 #744F1A

analogous

#1A6C74 #1A3F74 #221A74

triadic

#1A3F74 #741A3F #3F741A

tetradic

#1A3F74 #741A6C #744F1A #1A7422

square

#1A3F74 #741A6C #744F1A #1A7422

split-complementary

#1A3F74 #74221A #6C741A

monochromatic

#060E19 #0F2442 #1A3F74 #255AA6 #3676D2

Accessibility & contrast

On white

10.46

#1A3F74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1A3F74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F74

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F74	#FFFFFF	#000000	##FFFFFF
##1A3F74	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254476

Deuteranopia (green-blind)

#143C73

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a3f74;
/* rgb */ color: rgb(26, 63, 116);
/* oklch */ color: oklch(37.1% 0.100 257.8);

Tailwind

colors: {
  custom: {
    50: '#64739c',
    500: '#1a3f74',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f74;
$custom-light: #64739c;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f74",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 116
  },
  "hsl": {
    "h": 215.333,
    "s": 63.38,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37129,
    "c": 0.10039,
    "h": 257.8
  },
  "luminance": 0.05036
}

Semantic roles & 50–950 ramp

primary

#1A3F74

secondary

#A97E41

accent

#A341E6

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1A3F74

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

Preview Lab → · Contrast checker → · Palette generator →