#3A6783
Closest named color: Denim (#3B638C). oklch(49.3% 0.067 237.5), rgb(58, 103, 131).
Aa
White text reads best on this color (6.09:1).
About this color
#3A6783 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.067 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.022 away. White text reads best on it, at 6.09:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #3A6783 |
| RGB | rgb(58, 103, 131) |
| HSL | hsl(203, 39%, 37%) |
| OKLCH | oklch(49.3% 0.067 237.5) |
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 #3A6783 | 6.09:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #3A6783 | 3.44:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #3A6783 text on white | 6.09:1 | AA | Lc 80.3 | Fine for body text |
| #3A6783 text on black | 3.44:1 | AA large text | Lc -21.5 | 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
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D3
oklch(80.8% 0.032 237.7)
-
Step 400
400
#83A6BD
oklch(70.7% 0.051 237.2)
-
Step 500
500
#6290AD
oklch(63.1% 0.066 236.9)
-
Step 600
600
#487A99
oklch(55.7% 0.072 237.3)
-
Step 700
700 (this color)
#3A6783
oklch(49.3% 0.067 237.5)
-
Step 800
800
#30536A
oklch(42.6% 0.056 238.8)
-
Step 900
900
#2B4556
oklch(37.7% 0.043 238.1)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#3A6783 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) | #5A6684 | 0.039 |
| Deuteranopia (no green cones) | #505F83 | 0.033 |
| Tritanopia (no blue cones) | #076E70 | 0.053 |
| Achromatopsia (no color) | #626262 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6783
#3A6783
oklch(49.3% 0.067 237.5)
- #7E583A
#7E583A
oklch(49.4% 0.067 58.7)
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 #3A6783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.022
- Slate #516572 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.039
- Peacock Blue #016795 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.043
- Sea Blue #047495 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Metallic Blue #4F738E ΔE 0.047
Use #3A6783 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.