#4F699F
Closest named color: French Blue (#436BAD). oklch(52.4% 0.091 263.9), rgb(79, 105, 159).
Aa
White text reads best on this color (5.44:1).
About this color
#4F699F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.091 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.024 away. White text reads best on it, at 5.44:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #4F699F |
| RGB | rgb(79, 105, 159) |
| HSL | hsl(221, 34%, 47%) |
| OKLCH | oklch(52.4% 0.091 263.9) |
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 #4F699F | 5.44:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #4F699F | 3.85:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #4F699F text on white | 5.44:1 | AA | Lc 77.1 | Fine for body text |
| #4F699F text on black | 3.85:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DC
oklch(80.9% 0.041 263.6)
-
Step 400
400
#8CA1CA
oklch(70.8% 0.065 263.6)
-
Step 500
500
#6F89BD
oklch(63.1% 0.084 263.7)
-
Step 600
600 (this color)
#4F699F
oklch(52.4% 0.091 263.9)
-
Step 700
700
#486091
oklch(49.2% 0.084 263.7)
-
Step 800
800
#3B4E76
oklch(42.7% 0.071 264.2)
-
Step 900
900
#33415F
oklch(37.7% 0.055 264.7)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#4F699F 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) | #546EA1 | 0.016 |
| Deuteranopia (no green cones) | #4B669E | 0.010 |
| Tritanopia (no blue cones) | #2C757D | 0.082 |
| Achromatopsia (no color) | #696969 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F699F
#4F699F
oklch(52.4% 0.091 263.9)
- #836523
#836523
oklch(52.4% 0.091 83.7)
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 #4F699F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.024
- Muted Blue #3B719F ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- Dull Blue #49759C ΔE 0.036
- Denim #3B638C ΔE 0.042
- Metallic Blue #4F738E ΔE 0.045
- Mid Blue #276AB3 ΔE 0.047
Use #4F699F 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.