#616C8B
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.051 269.4), rgb(97, 108, 139).
Aa
White text reads best on this color (5.21:1).
About this color
#616C8B is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.051 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.028 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #616C8B |
| RGB | rgb(97, 108, 139) |
| HSL | hsl(224, 18%, 46%) |
| OKLCH | oklch(53.4% 0.051 269.4) |
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 #616C8B | 5.21:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #616C8B | 4.02:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #616C8B text on white | 5.21:1 | AA | Lc 75.9 | Fine for body text |
| #616C8B text on black | 4.02:1 | AA large text | Lc -25.9 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BAC0D0
oklch(80.8% 0.023 269.4)
-
Step 400
400
#97A0B8
oklch(70.7% 0.037 269.2)
-
Step 500
500
#7E89A6
oklch(63.1% 0.046 268.8)
-
Step 600
600 (this color)
#616C8B
oklch(53.4% 0.051 269.4)
-
Step 700
700
#56607C
oklch(49.2% 0.047 269.4)
-
Step 800
800
#464E65
oklch(42.6% 0.04 269.7)
-
Step 900
900
#3B4152
oklch(37.7% 0.03 269.7)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#616C8B 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) | #626E8C | 0.006 |
| Deuteranopia (no green cones) | #5F6B8A | 0.004 |
| Tritanopia (no blue cones) | #567276 | 0.046 |
| Achromatopsia (no color) | #6C6C6C | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616C8B
#616C8B
oklch(53.4% 0.051 269.4)
- #796C4B
#796C4B
oklch(53.5% 0.051 89)
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 #616C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.028
- Dull Blue #49759C ΔE 0.040
- Battleship Gray #6C757D ΔE 0.043
- Stormy Blue #507B9C ΔE 0.046
- Slate #516572 ΔE 0.049
- Grey Blue #647D8E ΔE 0.050
- Muted Blue #3B719F ΔE 0.050
- Cerulean #457B9D ΔE 0.051
Use #616C8B 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.