#616DB1
Closest named color: French Blue (#436BAD). oklch(55.5% 0.106 274.8), rgb(97, 109, 177).
Aa
White text reads best on this color (4.84:1).
About this color
#616DB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.106 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 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #616DB1 |
| RGB | rgb(97, 109, 177) |
| HSL | hsl(231, 34%, 54%) |
| OKLCH | oklch(55.5% 0.106 274.8) |
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 #616DB1 | 4.84:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #616DB1 | 4.33:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #616DB1 text on white | 4.84:1 | AA | Lc 73.5 | Content text, not long reading |
| #616DB1 text on black | 4.33:1 | AA large text | Lc -28.2 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B7BFE0
oklch(80.9% 0.047 274.6)
-
Step 400
400
#929DD1
oklch(70.6% 0.077 275)
-
Step 500
500
#7884C5
oklch(63% 0.099 275.2)
-
Step 600
600 (this color)
#616DB1
oklch(55.5% 0.106 274.8)
-
Step 700
700
#505B98
oklch(49% 0.098 274.5)
-
Step 800
800
#424B7C
oklch(42.8% 0.082 274.5)
-
Step 900
900
#383F63
oklch(37.8% 0.062 274.7)
-
Step 950
950
#21253A
oklch(27.1% 0.04 275.2)
#616DB1 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) | #5475B4 | 0.025 |
| Deuteranopia (no green cones) | #4E6EAF | 0.024 |
| Tritanopia (no blue cones) | #457B86 | 0.095 |
| Achromatopsia (no color) | #717171 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616DB1
#616DB1
oklch(55.5% 0.106 274.8)
- #877216
#877216
oklch(55.6% 0.107 95.1)
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 #616DB1, closest first.
No curated palette has a color within ΔE 0.04 of #616DB1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.048
- Windows Blue #3778BF ΔE 0.051
- Dull Blue #49759C ΔE 0.053
- Muted Blue #3B719F ΔE 0.056
- Stormy Blue #507B9C ΔE 0.061
- Steel Blue #4682B4 ΔE 0.062
- Mid Blue #276AB3 ΔE 0.063
Use #616DB1 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.