#4C688B
Closest named color: Denim (#3B638C). oklch(51% 0.065 254.4), rgb(76, 104, 139).
Aa
White text reads best on this color (5.73:1).
About this color
#4C688B is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.065 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.027 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #4C688B |
| RGB | rgb(76, 104, 139) |
| HSL | hsl(213, 29%, 42%) |
| OKLCH | oklch(51% 0.065 254.4) |
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 #4C688B | 5.73:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #4C688B | 3.66:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #4C688B text on white | 5.73:1 | AA | Lc 78.6 | Fine for body text |
| #4C688B text on black | 3.66:1 | AA large text | Lc -23.2 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE5
oklch(88.5% 0.018 253.4)
-
Step 300
300
#B3C2D5
oklch(80.9% 0.032 254.3)
-
Step 400
400
#8CA3C0
oklch(70.8% 0.05 254.4)
-
Step 500
500
#6F8CB0
oklch(63.2% 0.064 254.1)
-
Step 600
600
#57759C
oklch(55.5% 0.07 255.3)
-
Step 700
700 (this color)
#4C688B
oklch(51% 0.065 254.4)
-
Step 800
800
#3A506C
oklch(42.5% 0.054 254.8)
-
Step 900
900
#324358
oklch(37.7% 0.042 254.1)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#4C688B 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) | #5B6A8D | 0.022 |
| Deuteranopia (no green cones) | #53638A | 0.016 |
| Tritanopia (no blue cones) | #347074 | 0.057 |
| Achromatopsia (no color) | #666666 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C688B
#4C688B
oklch(51% 0.065 254.4)
- #7C613A
#7C613A
oklch(51.1% 0.065 75.6)
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 #4C688B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.033
- Dusky Blue #475F94 ΔE 0.035
- Muted Blue #3B719F ΔE 0.037
- Slate #516572 ΔE 0.039
- Dull Blue #49759C ΔE 0.041
- Flat Blue #3C73A8 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.050
Use #4C688B 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.