#1A3A88#1A3A88

#1A3A88 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.136 H 264.1°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A88
RGB	rgb(26, 58, 136)
HSL	hsl(223, 68%, 32%)
HSV	hsv(223, 81%, 53%)
CMYK	cmyk(80.9%, 57.4%, 0%, 46.7%)
CIE-LAB	lab(26.80, 18.74, -46.89)
CIE-LCH	lch(26.80, 50.49, 291.78°)
OKLab	oklab(37.57% -0.0141 -0.1353)
OKLCH	oklch(37.57% 0.136 264.1)
XYZ	xyz(6.3814, 5.0226, 23.9209)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A88 #88681A

analogous

#1A7188 #1A3A88 #311A88

triadic

#1A3A88 #881A3A #3A881A

tetradic

#1A3A88 #881A71 #88681A #1A8831

square

#1A3A88 #881A71 #88681A #1A8831

split-complementary

#1A3A88 #88311A #71881A

monochromatic

#060E21 #102455 #1A3A88 #2450BB #426EDB

Accessibility & contrast

On white

10.48

#1A3A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1A3A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A88

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A88	#FFFFFF	#000000	##FFFFFF
##1A3A88	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458B

Deuteranopia (green-blind)

#003B86

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a3a88;
/* rgb */ color: rgb(26, 58, 136);
/* oklch */ color: oklch(37.6% 0.136 264.1);

Tailwind

colors: {
  custom: {
    50: '#6a6fab',
    500: '#1a3a88',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a88;
$custom-light: #6a6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a88",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 136
  },
  "hsl": {
    "h": 222.545,
    "s": 67.901,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37569,
    "c": 0.13605,
    "h": 264.1
  },
  "luminance": 0.05023
}

Semantic roles & 50–950 ramp

primary

#1A3A88

secondary

#BB9843

accent

#B83DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3A88

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

Preview Lab → · Contrast checker → · Palette generator →