#616C9C
Closest named color: Dull Blue (#49759C). oklch(54.2% 0.076 273.7), rgb(97, 108, 156).
Aa
White text reads best on this color (5.08:1).
About this color
#616C9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.076 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.037 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #616C9C |
| RGB | rgb(97, 108, 156) |
| HSL | hsl(229, 23%, 50%) |
| OKLCH | oklch(54.2% 0.076 273.7) |
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 #616C9C | 5.08:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #616C9C | 4.13:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #616C9C text on white | 5.08:1 | AA | Lc 75.0 | Fine for body text |
| #616C9C text on black | 4.13:1 | AA large text | Lc -26.7 | 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
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D5D9E6
oklch(88.6% 0.018 272.3)
-
Step 300
300
#B9C0D7
oklch(81% 0.033 272.2)
-
Step 400
400
#959FC4
oklch(70.7% 0.055 273.1)
-
Step 500
500
#7C87B5
oklch(63.2% 0.071 273.8)
-
Step 600
600 (this color)
#616C9C
oklch(54.2% 0.076 273.7)
-
Step 700
700
#545E89
oklch(49.2% 0.07 273.5)
-
Step 800
800
#454D6F
oklch(42.8% 0.057 273.6)
-
Step 900
900
#3A405A
oklch(37.7% 0.045 274)
-
Step 950
950
#222635
oklch(27.2% 0.029 272.8)
#616C9C 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) | #5C719E | 0.015 |
| Deuteranopia (no green cones) | #586C9B | 0.012 |
| Tritanopia (no blue cones) | #4F757D | 0.068 |
| Achromatopsia (no color) | #6E6E6E | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616C9C
#616C9C
oklch(54.2% 0.076 273.7)
- #7E6E38
#7E6E38
oklch(54.1% 0.076 93.2)
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 #616C9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.037
- Metallic Blue #4F738E ΔE 0.041
- Muted Blue #3B719F ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.045
- French Blue #436BAD ΔE 0.045
- Stormy Blue #507B9C ΔE 0.046
- Cerulean #457B9D ΔE 0.051
- Dusky Blue #475F94 ΔE 0.055
Use #616C9C 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.