#1F4358#1F4358

#1F4358 is a dark, muted cyan. Relative luminance 0.050; OKLCH L 36.6% C 0.055 H 236.5°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F4358
RGB	rgb(31, 67, 88)
HSL	hsl(202, 48%, 23%)
HSV	hsv(202, 65%, 35%)
CMYK	cmyk(64.8%, 23.9%, 0%, 65.5%)
CIE-LAB	lab(26.76, -5.71, -16.41)
CIE-LCH	lch(26.76, 17.38, 250.83°)
OKLab	oklab(36.61% -0.0304 -0.0459)
OKLCH	oklch(36.61% 0.055 236.5)
XYZ	xyz(4.3330, 5.0098, 9.9693)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4358 #58341F

analogous

#1F5850 #1F4358 #1F2658

triadic

#1F4358 #581F43 #43581F

tetradic

#1F4358 #501F58 #58341F #26581F

square

#1F4358 #501F58 #58341F #26581F

split-complementary

#1F4358 #581F26 #58501F

monochromatic

#081117 #0F212B #1F4358 #2F6585 #3F88B3

Accessibility & contrast

On white

10.49

#1F4358 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1F4358 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4358

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4358	#FFFFFF	#000000	##FFFFFF
##1F4358	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#394359

Deuteranopia (green-blind)

#313D58

Tritanopia (blue-blind)

#00484A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f4358;
/* rgb */ color: rgb(31, 67, 88);
/* oklch */ color: oklch(36.6% 0.055 236.5);

Tailwind

colors: {
  custom: {
    50: '#617787',
    500: '#1f4358',
    950: '#000000',
  },
}

SCSS

$custom: #1f4358;
$custom-light: #617787;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4358",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 88
  },
  "hsl": {
    "h": 202.105,
    "s": 47.899,
    "l": 23.333
  },
  "oklch": {
    "l": 0.36613,
    "c": 0.05507,
    "h": 236.5
  },
  "luminance": 0.0501
}

Semantic roles & 50–950 ramp

primary

#1F4358

secondary

#8D6046

accent

#8250D7

background

#F5F7F8

surface

#EAEDEF

border

#C6C8CA

text

#05080B

muted

#797B7C

Preview Lab

Preview with #1F4358

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

Preview Lab → · Contrast checker → · Palette generator →