#1F438D#1F438D

#1F438D is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.2% C 0.130 H 262.6°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F438D
RGB	rgb(31, 67, 141)
HSL	hsl(220, 64%, 34%)
HSV	hsv(220, 78%, 55%)
CMYK	cmyk(78%, 52.5%, 0%, 44.7%)
CIE-LAB	lab(29.98, 15.10, -44.82)
CIE-LCH	lch(29.98, 47.29, 288.62°)
OKLab	oklab(40.16% -0.0168 -0.129)
OKLCH	oklch(40.16% 0.13 262.6)
XYZ	xyz(7.3782, 6.2279, 26.0074)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F438D #8D691F

analogous

#1F7A8D #1F438D #321F8D

triadic

#1F438D #8D1F43 #438D1F

tetradic

#1F438D #8D1F7A #8D691F #1F8D32

square

#1F438D #8D1F7A #8D691F #1F8D32

split-complementary

#1F438D #8D321F #7A8D1F

monochromatic

#091329 #142B5B #1F438D #2A5BBF #4E7BD8

Accessibility & contrast

On white

9.35

#1F438D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F438D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F438D

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F438D	#FFFFFF	#000000	##FFFFFF
##1F438D	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134C90

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f438d;
/* rgb */ color: rgb(31, 67, 141);
/* oklch */ color: oklch(40.2% 0.130 262.6);

Tailwind

colors: {
  custom: {
    50: '#6c76af',
    500: '#1f438d',
    950: '#000000',
  },
}

SCSS

$custom: #1f438d;
$custom-light: #6c76af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f438d",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 141
  },
  "hsl": {
    "h": 220.364,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.40156,
    "c": 0.13005,
    "h": 262.6
  },
  "luminance": 0.06229
}

Semantic roles & 50–950 ramp

primary

#1F438D

secondary

#BB974D

accent

#B141E7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F438D

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

Preview Lab → · Contrast checker → · Palette generator →