#616B8F
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.058 272.3), rgb(97, 107, 143).
Aa
White text reads best on this color (5.23:1).
About this color
#616B8F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.058 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.032 away. White text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.00:1 |
| White text | 5.23:1 |
Values
| HEX | #616B8F |
| RGB | rgb(97, 107, 143) |
| HSL | hsl(227, 19%, 47%) |
| OKLCH | oklch(53.4% 0.058 272.3) |
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 #616B8F | 5.23:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #616B8F | 4.00:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #616B8F text on white | 5.23:1 | AA | Lc 76.0 | Fine for body text |
| #616B8F text on black | 4.00:1 | AA large text | Lc -25.7 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D6D9E3
oklch(88.6% 0.014 272.7)
-
Step 300
300
#BAC0D2
oklch(80.9% 0.026 271.1)
-
Step 400
400
#97A0BB
oklch(70.8% 0.041 270.8)
-
Step 500
500
#7E88AA
oklch(63.1% 0.053 272)
-
Step 600
600 (this color)
#616B8F
oklch(53.4% 0.058 272.3)
-
Step 700
700
#565F80
oklch(49.1% 0.054 272.5)
-
Step 800
800
#464E68
oklch(42.8% 0.045 271.2)
-
Step 900
900
#3B4154
oklch(37.8% 0.034 271.1)
-
Step 950
950
#232631
oklch(27% 0.021 273)
#616B8F 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) | #606E91 | 0.008 |
| Deuteranopia (no green cones) | #5C6A8E | 0.008 |
| Tritanopia (no blue cones) | #547277 | 0.053 |
| Achromatopsia (no color) | #6C6C6C | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616B8F
#616B8F
oklch(53.4% 0.058 272.3)
- #796C45
#796C45
oklch(53.4% 0.058 91.7)
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 #616B8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.032
- Dull Blue #49759C ΔE 0.039
- Stormy Blue #507B9C ΔE 0.047
- Muted Blue #3B719F ΔE 0.048
- Battleship Gray #6C757D ΔE 0.050
- Grey Purple #826D8C ΔE 0.052
- Cerulean #457B9D ΔE 0.052
- Slate #516572 ΔE 0.053
Use #616B8F 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.