#616DAB
Closest named color: French Blue (#436BAD). oklch(55.2% 0.098 274.4), rgb(97, 109, 171).
Aa
White text reads best on this color (4.90:1).
About this color
#616DAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.098 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.038 away. White text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #616DAB |
| RGB | rgb(97, 109, 171) |
| HSL | hsl(230, 31%, 53%) |
| OKLCH | oklch(55.2% 0.098 274.4) |
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 #616DAB | 4.90:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #616DAB | 4.28:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #616DAB text on white | 4.90:1 | AA | Lc 73.9 | Content text, not long reading |
| #616DAB text on black | 4.28:1 | AA large text | Lc -27.8 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDE
oklch(80.9% 0.044 275.3)
-
Step 400
400
#939ECD
oklch(70.8% 0.07 274.3)
-
Step 500
500
#7985C0
oklch(63.1% 0.09 274.7)
-
Step 600
600 (this color)
#616DAB
oklch(55.2% 0.098 274.4)
-
Step 700
700
#515C94
oklch(49.1% 0.091 274.2)
-
Step 800
800
#434B78
oklch(42.7% 0.075 275.1)
-
Step 900
900
#383F61
oklch(37.7% 0.059 274.4)
-
Step 950
950
#212539
oklch(27% 0.038 274.9)
#616DAB 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) | #5774AE | 0.021 |
| Deuteranopia (no green cones) | #516EAA | 0.021 |
| Tritanopia (no blue cones) | #487A84 | 0.087 |
| Achromatopsia (no color) | #717171 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616DAB
#616DAB
oklch(55.2% 0.098 274.4)
- #857124
#857124
oklch(55.3% 0.097 94.2)
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 #616DAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.044
- Dull Blue #49759C ΔE 0.047
- Muted Blue #3B719F ΔE 0.050
- Windows Blue #3778BF ΔE 0.054
- Stormy Blue #507B9C ΔE 0.055
- Cerulean #457B9D ΔE 0.059
- Metallic Blue #4F738E ΔE 0.059
Use #616DAB 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.