#3C688D
Closest named color: Denim (#3B638C). oklch(50.2% 0.077 245.5), rgb(60, 104, 141).
Aa
White text reads best on this color (5.90:1).
About this color
#3C688D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.077 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.015 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #3C688D |
| RGB | rgb(60, 104, 141) |
| HSL | hsl(207, 40%, 39%) |
| OKLCH | oklch(50.2% 0.077 245.5) |
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 #3C688D | 5.90:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #3C688D | 3.55:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #3C688D text on white | 5.90:1 | AA | Lc 79.4 | Fine for body text |
| #3C688D text on black | 3.55:1 | AA large text | Lc -22.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#AEC4D8
oklch(81% 0.037 245.7)
-
Step 400
400
#82A5C4
oklch(70.7% 0.06 245.5)
-
Step 500
500
#628EB5
oklch(63% 0.076 246.1)
-
Step 600
600
#4878A1
oklch(55.6% 0.083 245.8)
-
Step 700
700 (this color)
#3C688D
oklch(50.2% 0.077 245.5)
-
Step 800
800
#305270
oklch(42.6% 0.064 246.6)
-
Step 900
900
#2A445A
oklch(37.6% 0.05 245.2)
-
Step 950
950
#192835
oklch(27% 0.032 245.5)
#3C688D 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) | #58698F | 0.035 |
| Deuteranopia (no green cones) | #4D618C | 0.026 |
| Tritanopia (no blue cones) | #007175 | 0.064 |
| Achromatopsia (no color) | #646464 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C688D
#3C688D
oklch(50.2% 0.077 245.5)
- #825A31
#825A31
oklch(50.1% 0.077 65.1)
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 #3C688D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.015
- Dusky Blue #475F94 ΔE 0.033
- Muted Blue #3B719F ΔE 0.034
- Peacock Blue #016795 ΔE 0.036
- Ocean Blue #03719C ΔE 0.039
- Sea Blue #047495 ΔE 0.041
- Metallic Blue #4F738E ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.042
Use #3C688D 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.