#616BB1
Closest named color: French Blue (#436BAD). oklch(55.1% 0.109 276), rgb(97, 107, 177).
Aa
White text reads best on this color (4.94:1).
About this color
#616BB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.109 and its hue 276°. 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 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #616BB1 |
| RGB | rgb(97, 107, 177) |
| HSL | hsl(233, 34%, 54%) |
| OKLCH | oklch(55.1% 0.109 276) |
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 #616BB1 | 4.94:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #616BB1 | 4.24:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #616BB1 text on white | 4.94:1 | AA | Lc 74.1 | Content text, not long reading |
| #616BB1 text on black | 4.24:1 | AA large text | Lc -27.6 | 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
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B7BFE1
oklch(81% 0.049 274.8)
-
Step 400
400
#939DD2
oklch(70.8% 0.078 275.9)
-
Step 500
500
#7984C6
oklch(63.2% 0.1 275.9)
-
Step 600
600 (this color)
#616BB1
oklch(55.1% 0.109 276)
-
Step 700
700
#525A9A
oklch(49.1% 0.102 276.5)
-
Step 800
800
#434A7D
oklch(42.7% 0.085 276.3)
-
Step 900
900
#383E64
oklch(37.7% 0.065 276)
-
Step 950
950
#21253B
oklch(27.2% 0.041 275.4)
#616BB1 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) | #5173B4 | 0.027 |
| Deuteranopia (no green cones) | #4B6DAF | 0.028 |
| Tritanopia (no blue cones) | #457985 | 0.097 |
| Achromatopsia (no color) | #707070 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616BB1
#616BB1
oklch(55.1% 0.109 276)
- #85710E
#85710E
oklch(55.1% 0.109 96.2)
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 #616BB1, closest first.
No curated palette has a color within ΔE 0.04 of #616BB1.
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 0.050
- Windows Blue #3778BF ΔE 0.053
- Dull Blue #49759C ΔE 0.056
- Muted Blue #3B719F ΔE 0.057
- Iris #6258C4 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.063
Use #616BB1 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.