#1F456B#1F456B

#1F456B is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.2% C 0.078 H 250.6°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F456B
RGB	rgb(31, 69, 107)
HSL	hsl(210, 55%, 27%)
HSV	hsv(210, 71%, 42%)
CMYK	cmyk(71%, 35.5%, 0%, 58%)
CIE-LAB	lab(28.40, 0.18, -26.06)
CIE-LCH	lch(28.40, 26.06, 270.40°)
OKLab	oklab(38.23% -0.026 -0.0739)
OKLCH	oklch(38.23% 0.078 250.6)
XYZ	xyz(5.3461, 5.6085, 14.7079)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F456B #6B451F

analogous

#1F6B6B #1F456B #1F1F6B

triadic

#1F456B #6B1F45 #456B1F

tetradic

#1F456B #6B1F6B #6B451F #1F6B1F

square

#1F456B #6B1F6B #6B451F #1F6B1F

split-complementary

#1F456B #6B1F1F #6B6B1F

monochromatic

#070F18 #11263C #1F456B #2D649A #3D82C7

Accessibility & contrast

On white

9.90

#1F456B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1F456B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F456B

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F456B	#FFFFFF	#000000	##FFFFFF
##1F456B	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34476D

Deuteranopia (green-blind)

#2A406A

Tritanopia (blue-blind)

#004E53

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f456b;
/* rgb */ color: rgb(31, 69, 107);
/* oklch */ color: oklch(38.2% 0.078 250.6);

Tailwind

colors: {
  custom: {
    50: '#647895',
    500: '#1f456b',
    950: '#000000',
  },
}

SCSS

$custom: #1f456b;
$custom-light: #647895;
$custom-dark: #000000;

JSON

{
  "hex": "#1f456b",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 107
  },
  "hsl": {
    "h": 210,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.38228,
    "c": 0.07832,
    "h": 250.6
  },
  "luminance": 0.05609
}

Semantic roles & 50–950 ramp

primary

#1F456B

secondary

#9F7347

accent

#9449DE

background

#F6F7F9

surface

#EBEDF1

border

#C6C8CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1F456B

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

Preview Lab → · Contrast checker → · Palette generator →