#616B7F
Closest named color: Metallic Blue (#4F738E). oklch(52.7% 0.034 264.2), rgb(97, 107, 127).
Aa
White text reads best on this color (5.36:1).
About this color
#616B7F is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.034 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.033 away. White text reads best on it, at 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #616B7F |
| RGB | rgb(97, 107, 127) |
| HSL | hsl(220, 13%, 44%) |
| OKLCH | oklch(52.7% 0.034 264.2) |
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 #616B7F | 5.36:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #616B7F | 3.91:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #616B7F text on white | 5.36:1 | AA | Lc 76.7 | Fine for body text |
| #616B7F text on black | 3.91:1 | AA large text | Lc -25.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9DF
oklch(88.5% 0.009 264.5)
-
Step 300
300
#BCC1CB
oklch(81% 0.015 264.5)
-
Step 400
400
#99A1B0
oklch(70.7% 0.024 263.2)
-
Step 500
500
#808A9D
oklch(63.2% 0.031 263.3)
-
Step 600
600 (this color)
#616B7F
oklch(52.7% 0.034 264.2)
-
Step 700
700
#586173
oklch(49.2% 0.031 264.2)
-
Step 800
800
#484F5E
oklch(42.7% 0.027 265.5)
-
Step 900
900
#3C424D
oklch(37.8% 0.02 262.6)
-
Step 950
950
#23262D
oklch(26.9% 0.014 267)
#616B7F 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) | #656C80 | 0.007 |
| Deuteranopia (no green cones) | #62697F | 0.006 |
| Tritanopia (no blue cones) | #596F72 | 0.030 |
| Achromatopsia (no color) | #6B6B6B | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616B7F
#616B7F
oklch(52.7% 0.034 264.2)
- #746A55
#746A55
oklch(52.8% 0.034 85.5)
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 #616B7F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.033
- Dim Gray #696969 ΔE 0.034
- Slate #516572 ΔE 0.035
- Battleship Gray #6C757D ΔE 0.036
- Dull Blue #49759C ΔE 0.051
- Grey Blue #647D8E ΔE 0.052
- Battleship Grey #6B7C85 ΔE 0.052
- Stormy Blue #507B9C ΔE 0.056
Use #616B7F 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.