#39647F
Closest named color: Denim (#3B638C). oklch(48.4% 0.065 237.7), rgb(57, 100, 127).
Aa
White text reads best on this color (6.35:1).
About this color
#39647F is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.065 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.023 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #39647F |
| RGB | rgb(57, 100, 127) |
| HSL | hsl(203, 38%, 36%) |
| OKLCH | oklch(48.4% 0.065 237.7) |
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 #39647F | 6.35:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #39647F | 3.30:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #39647F text on white | 6.35:1 | AA | Lc 81.5 | Fine for body text |
| #39647F text on black | 3.30:1 | AA large text | Lc -20.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#84A6BD
oklch(70.8% 0.05 238)
-
Step 500
500
#6490AC
oklch(63.2% 0.064 237.1)
-
Step 600
600
#4A7997
oklch(55.5% 0.069 237.8)
-
Step 700
700 (this color)
#39647F
oklch(48.4% 0.065 237.7)
-
Step 800
800
#315369
oklch(42.6% 0.054 238.2)
-
Step 900
900
#2C4555
oklch(37.7% 0.041 237.4)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#39647F 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) | #586380 | 0.038 |
| Deuteranopia (no green cones) | #4E5C7F | 0.033 |
| Tritanopia (no blue cones) | #0C6B6D | 0.052 |
| Achromatopsia (no color) | #5F5F5F | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39647F
#39647F
oklch(48.4% 0.065 237.7)
- #7A5539
#7A5539
oklch(48.3% 0.064 57.6)
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 #39647F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.023
- YInMn Blue #415A77 ΔE 0.030
- Slate #516572 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.040
- Peacock Blue #016795 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
- Dusty Grape #545775 ΔE 0.047
Use #39647F 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.