#1C637C
Closest named color: Petrol (#005F6A). oklch(46.8% 0.079 226.2), rgb(28, 99, 124).
Aa
White text reads best on this color (6.71:1).
About this color
#1C637C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.079 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.034 away. White text reads best on it, at 6.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #1C637C |
| RGB | rgb(28, 99, 124) |
| HSL | hsl(196, 63%, 30%) |
| OKLCH | oklch(46.8% 0.079 226.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1C637C | 6.71:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #1C637C | 3.12:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #1C637C text on white | 6.71:1 | AA | Lc 82.8 | Fine for body text |
| #1C637C text on black | 3.12:1 | AA large text | Lc -19.1 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A8C6D4
oklch(80.9% 0.038 227.7)
-
Step 400
400
#77A9BE
oklch(70.7% 0.061 226)
-
Step 500
500
#5293AE
oklch(63.1% 0.078 227)
-
Step 600
600
#337D99
oklch(55.5% 0.084 226.4)
-
Step 700
700 (this color)
#1C637C
oklch(46.8% 0.079 226.2)
-
Step 800
800
#20566A
oklch(42.6% 0.065 226)
-
Step 900
900
#204756
oklch(37.6% 0.051 225.8)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#1C637C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #55617D | 0.058 |
| Deuteranopia (no green cones) | #48587C | 0.050 |
| Tritanopia (no blue cones) | #006A6B | 0.042 |
| Achromatopsia (no color) | #5C5C5C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C637C
#1C637C
oklch(46.8% 0.079 226.2)
- #7E4C33
#7E4C33
oklch(46.9% 0.078 46.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1C637C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.034
- YInMn Blue #415A77 ΔE 0.039
- Denim #3B638C ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
- Peacock Blue #016795 ΔE 0.040
- Dark Aqua #05696B ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.053
- Slate #516572 ΔE 0.055
Use #1C637C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.