#1F438E#1F438E

#1F438E is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.2% C 0.131 H 262.7°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F438E
RGB	rgb(31, 67, 142)
HSL	hsl(221, 64%, 34%)
HSV	hsv(221, 78%, 56%)
CMYK	cmyk(78.2%, 52.8%, 0%, 44.3%)
CIE-LAB	lab(30.05, 15.50, -45.31)
CIE-LCH	lch(30.05, 47.89, 288.89°)
OKLab	oklab(40.24% -0.0167 -0.1304)
OKLCH	oklch(40.24% 0.131 262.7)
XYZ	xyz(7.4530, 6.2578, 26.4010)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F438E #8E6A1F

analogous

#1F7B8E #1F438E #331F8E

triadic

#1F438E #8E1F43 #438E1F

tetradic

#1F438E #8E1F7B #8E6A1F #1F8E33

square

#1F438E #8E1F7B #8E6A1F #1F8E33

split-complementary

#1F438E #8E331F #7B8E1F

monochromatic

#09142A #142B5C #1F438E #2A5BC0 #4F7CD9

Accessibility & contrast

On white

9.33

#1F438E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F438E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F438E

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F438E	#FFFFFF	#000000	##FFFFFF
##1F438E	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114C91

Deuteranopia (green-blind)

#00428D

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f438e;
/* rgb */ color: rgb(31, 67, 142);
/* oklch */ color: oklch(40.2% 0.131 262.7);

Tailwind

colors: {
  custom: {
    50: '#6c76b0',
    500: '#1f438e',
    950: '#000000',
  },
}

SCSS

$custom: #1f438e;
$custom-light: #6c76b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f438e",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 142
  },
  "hsl": {
    "h": 220.541,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.40235,
    "c": 0.13149,
    "h": 262.7
  },
  "luminance": 0.06259
}

Semantic roles & 50–950 ramp

primary

#1F438E

secondary

#BB984D

accent

#B141E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F438E

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

Preview Lab → · Contrast checker → · Palette generator →