#616BA3
Closest named color: French Blue (#436BAD). oklch(54.3% 0.088 275.3), rgb(97, 107, 163).
Aa
White text reads best on this color (5.07:1).
About this color
#616BA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.088 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.039 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.14:1 |
| White text | 5.07:1 |
Values
| HEX | #616BA3 |
| RGB | rgb(97, 107, 163) |
| HSL | hsl(231, 26%, 51%) |
| OKLCH | oklch(54.3% 0.088 275.3) |
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 #616BA3 | 5.07:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #616BA3 | 4.14:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #616BA3 text on white | 5.07:1 | AA | Lc 75.0 | Content text, not long reading |
| #616BA3 text on black | 4.14:1 | AA large text | Lc -26.8 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D5D8E8
oklch(88.5% 0.022 277.5)
-
Step 300
300
#B9BFDB
oklch(80.9% 0.04 275.9)
-
Step 400
400
#959EC9
oklch(70.7% 0.064 275.4)
-
Step 500
500
#7B86BB
oklch(63.2% 0.081 274.8)
-
Step 600
600 (this color)
#616BA3
oklch(54.3% 0.088 275.3)
-
Step 700
700
#535C8F
oklch(49% 0.083 275.3)
-
Step 800
800
#444C74
oklch(42.8% 0.067 274.6)
-
Step 900
900
#393F5E
oklch(37.6% 0.054 275.1)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#616BA3 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) | #5871A5 | 0.019 |
| Deuteranopia (no green cones) | #536CA2 | 0.019 |
| Tritanopia (no blue cones) | #4D767F | 0.079 |
| Achromatopsia (no color) | #6E6E6E | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616BA3
#616BA3
oklch(54.3% 0.088 275.3)
- #806F2C
#806F2C
oklch(54.4% 0.089 95)
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 #616BA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.039
- Dull Blue #49759C ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.045
- Muted Blue #3B719F ΔE 0.047
- Metallic Blue #4F738E ΔE 0.051
- Stormy Blue #507B9C ΔE 0.053
- Dusky Blue #475F94 ΔE 0.055
- Cerulean #457B9D ΔE 0.057
Use #616BA3 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.