#616B9D
Closest named color: Dull Blue (#49759C). oklch(54% 0.079 274.8), rgb(97, 107, 157).
Aa
White text reads best on this color (5.12:1).
About this color
#616B9D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.079 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.039 away. White text reads best on it, at 5.12:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.09:1 |
| White text | 5.12:1 |
Values
| HEX | #616B9D |
| RGB | rgb(97, 107, 157) |
| HSL | hsl(230, 24%, 50%) |
| OKLCH | oklch(54% 0.079 274.8) |
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 #616B9D | 5.12:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #616B9D | 4.09:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #616B9D text on white | 5.12:1 | AA | Lc 75.3 | Fine for body text |
| #616B9D text on black | 4.09:1 | AA large text | Lc -26.4 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD8
oklch(80.8% 0.036 274.9)
-
Step 400
400
#969EC5
oklch(70.7% 0.058 275.8)
-
Step 500
500
#7C86B6
oklch(63% 0.073 275)
-
Step 600
600 (this color)
#616B9D
oklch(54% 0.079 274.8)
-
Step 700
700
#545D8B
oklch(49.1% 0.075 274.9)
-
Step 800
800
#454C71
oklch(42.7% 0.062 275.3)
-
Step 900
900
#3A405B
oklch(37.8% 0.047 274.3)
-
Step 950
950
#222535
oklch(26.9% 0.03 276)
#616B9D 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) | #5B709F | 0.015 |
| Deuteranopia (no green cones) | #566B9C | 0.015 |
| Tritanopia (no blue cones) | #4F757D | 0.071 |
| Achromatopsia (no color) | #6E6E6E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616B9D
#616B9D
oklch(54% 0.079 274.8)
- #7D6E35
#7D6E35
oklch(54% 0.079 94.9)
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 #616B9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.039
- French Blue #436BAD ΔE 0.044
- Metallic Blue #4F738E ΔE 0.044
- Muted Blue #3B719F ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.045
- Stormy Blue #507B9C ΔE 0.049
- Dusky Blue #475F94 ΔE 0.053
- Cerulean #457B9D ΔE 0.053
Use #616B9D 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.