#1A257D#1A257D

#1A257D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.3% C 0.147 H 269.9°. Best body text is #FFFFFF at 13.09:1 contrast (WCAG AA passes).

Color values

HEX	#1A257D
RGB	rgb(26, 37, 125)
HSL	hsl(233, 66%, 30%)
HSV	hsv(233, 79%, 49%)
CMYK	cmyk(79.2%, 70.4%, 0%, 51%)
CIE-LAB	lab(20.14, 28.91, -50.87)
CIE-LCH	lch(20.14, 58.51, 299.61°)
OKLab	oklab(32.32% -0.0002 -0.1472)
OKLCH	oklch(32.32% 0.147 269.9)
XYZ	xyz(4.7880, 3.0229, 19.7292)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A257D #7D721A

analogous

#1A577D #1A257D #401A7D

triadic

#1A257D #7D1A25 #257D1A

tetradic

#1A257D #7D1A57 #7D721A #1A7D40

square

#1A257D #7D1A57 #7D721A #1A7D40

split-complementary

#1A257D #7D401A #577D1A

monochromatic

#050719 #0F164A #1A257D #2534B0 #3B4CD6

Accessibility & contrast

On white

13.09

#1A257D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1A257D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A257D

13.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A257D	#FFFFFF	#000000	##FFFFFF
##1A257D	1.00	13.09	1.60	13.09
#FFFFFF	13.09	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002C7B

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1a257d;
/* rgb */ color: rgb(26, 37, 125);
/* oklch */ color: oklch(32.3% 0.147 269.9);

Tailwind

colors: {
  custom: {
    50: '#685fa4',
    500: '#1a257d',
    950: '#000000',
  },
}

SCSS

$custom: #1a257d;
$custom-light: #685fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1a257d",
  "rgb": {
    "r": 26,
    "g": 37,
    "b": 125
  },
  "hsl": {
    "h": 233.333,
    "s": 65.563,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32322,
    "c": 0.14724,
    "h": 269.9
  },
  "luminance": 0.03023
}

Semantic roles & 50–950 ramp

primary

#1A257D

secondary

#B1A542

accent

#D63FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1A257D

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

Preview Lab → · Contrast checker → · Palette generator →