#3F6476
Closest named color: Slate (#516572). oklch(48.3% 0.051 230.2), rgb(63, 100, 118).
Aa
White text reads best on this color (6.37:1).
About this color
#3F6476 is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.051 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.023 away. White text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #3F6476 |
| RGB | rgb(63, 100, 118) |
| HSL | hsl(200, 30%, 35%) |
| OKLCH | oklch(48.3% 0.051 230.2) |
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 #3F6476 | 6.37:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #3F6476 | 3.29:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #3F6476 text on white | 6.37:1 | AA | Lc 81.6 | Fine for body text |
| #3F6476 text on black | 3.29:1 | AA large text | Lc -20.3 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#88A6B5
oklch(70.8% 0.04 229.6)
-
Step 500
500
#6A90A3
oklch(63.2% 0.051 230.2)
-
Step 600
600
#517A8E
oklch(55.7% 0.055 230.1)
-
Step 700
700 (this color)
#3F6476
oklch(48.3% 0.051 230.2)
-
Step 800
800
#365462
oklch(42.8% 0.042 229)
-
Step 900
900
#2F4550
oklch(37.7% 0.033 230.4)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#3F6476 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) | #5B6377 | 0.037 |
| Deuteranopia (no green cones) | #535C76 | 0.033 |
| Tritanopia (no blue cones) | #27696A | 0.037 |
| Achromatopsia (no color) | #5F5F5F | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6476
#3F6476
oklch(48.3% 0.051 230.2)
- #765644
#765644
oklch(48.2% 0.051 50.5)
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 #3F6476, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.023
- YInMn Blue #415A77 ΔE 0.031
- Denim #3B638C ΔE 0.037
- Dusty Grape #545775 ΔE 0.045
- Dark Aqua #05696B ΔE 0.047
- Petrol #005F6A ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.052
- Deep Turquoise #017374 ΔE 0.056
Use #3F6476 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.