#1C637E
Closest named color: Peacock Blue (#016795). oklch(46.9% 0.08 228.1), rgb(28, 99, 126).
Aa
White text reads best on this color (6.69:1).
About this color
#1C637E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.080 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.037 away. White text reads best on it, at 6.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #1C637E |
| RGB | rgb(28, 99, 126) |
| HSL | hsl(197, 64%, 30%) |
| OKLCH | oklch(46.9% 0.08 228.1) |
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 #1C637E | 6.69:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #1C637E | 3.13:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #1C637E text on white | 6.69:1 | AA | Lc 82.7 | Fine for body text |
| #1C637E text on black | 3.13:1 | AA large text | Lc -19.2 | 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
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D5
oklch(80.9% 0.04 228.7)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5193AF
oklch(63.1% 0.079 227.6)
-
Step 600
600
#327D9B
oklch(55.6% 0.086 227.9)
-
Step 700
700 (this color)
#1C637E
oklch(46.9% 0.08 228.1)
-
Step 800
800
#20566C
oklch(42.7% 0.067 228.4)
-
Step 900
900
#204757
oklch(37.7% 0.052 227.4)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#1C637E 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) | #55617F | 0.058 |
| Deuteranopia (no green cones) | #48587E | 0.050 |
| Tritanopia (no blue cones) | #006B6C | 0.046 |
| Achromatopsia (no color) | #5C5C5C | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C637E
#1C637E
oklch(46.9% 0.08 228.1)
- #7F4C31
#7F4C31
oklch(47% 0.08 48)
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 #1C637E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.037
- Denim #3B638C ΔE 0.037
- Petrol #005F6A ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.038
- Dark Aqua #05696B ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.052
Use #1C637E 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.