#1F438C#1F438C

#1F438C is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.1% C 0.129 H 262.4°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#1F438C
RGB	rgb(31, 67, 140)
HSL	hsl(220, 64%, 34%)
HSV	hsv(220, 78%, 55%)
CMYK	cmyk(77.9%, 52.1%, 0%, 45.1%)
CIE-LAB	lab(29.91, 14.70, -44.32)
CIE-LCH	lch(29.91, 46.69, 288.35°)
OKLab	oklab(40.08% -0.0169 -0.1275)
OKLCH	oklch(40.08% 0.129 262.4)
XYZ	xyz(7.3042, 6.1982, 25.6173)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F438C #8C681F

analogous

#1F798C #1F438C #311F8C

triadic

#1F438C #8C1F43 #438C1F

tetradic

#1F438C #8C1F79 #8C681F #1F8C31

square

#1F438C #8C1F79 #8C681F #1F8C31

split-complementary

#1F438C #8C311F #798C1F

monochromatic

#091328 #142B5A #1F438C #2A5BBE #4E7BD8

Accessibility & contrast

On white

9.38

#1F438C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1F438C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F438C

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F438C	#FFFFFF	#000000	##FFFFFF
##1F438C	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154C8F

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f438c;
/* rgb */ color: rgb(31, 67, 140);
/* oklch */ color: oklch(40.1% 0.129 262.4);

Tailwind

colors: {
  custom: {
    50: '#6c76ae',
    500: '#1f438c',
    950: '#000000',
  },
}

SCSS

$custom: #1f438c;
$custom-light: #6c76ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f438c",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 140
  },
  "hsl": {
    "h": 220.183,
    "s": 63.743,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40077,
    "c": 0.12862,
    "h": 262.4
  },
  "luminance": 0.06199
}

Semantic roles & 50–950 ramp

primary

#1F438C

secondary

#BB964C

accent

#B041E7

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1F438C

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

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