#616781
Closest named color: Slate (#516572). oklch(51.8% 0.042 274.7), rgb(97, 103, 129).
Aa
White text reads best on this color (5.57:1).
About this color
#616781 is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.042 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.035 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #616781 |
| RGB | rgb(97, 103, 129) |
| HSL | hsl(229, 14%, 44%) |
| OKLCH | oklch(51.8% 0.042 274.7) |
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 #616781 | 5.57:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #616781 | 3.76:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #616781 text on white | 5.57:1 | AA | Lc 77.9 | Fine for body text |
| #616781 text on black | 3.76:1 | AA large text | Lc -23.9 | 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 700.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D7D9E1
oklch(88.6% 0.011 274.9)
-
Step 300
300
#BCC0CE
oklch(80.9% 0.02 273.2)
-
Step 400
400
#9A9FB5
oklch(70.6% 0.033 275.4)
-
Step 500
500
#8288A3
oklch(63.1% 0.041 275.3)
-
Step 600
600
#6B728E
oklch(55.7% 0.044 273.9)
-
Step 700
700 (this color)
#616781
oklch(51.8% 0.042 274.7)
-
Step 800
800
#494E62
oklch(42.7% 0.034 273.9)
-
Step 900
900
#3D4150
oklch(37.8% 0.026 273.4)
-
Step 950
950
#24262F
oklch(27% 0.017 275.4)
#616781 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) | #606982 | 0.006 |
| Deuteranopia (no green cones) | #5D6780 | 0.006 |
| Tritanopia (no blue cones) | #596C70 | 0.037 |
| Achromatopsia (no color) | #686868 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616781
#616781
oklch(51.8% 0.042 274.7)
- #70694D
#70694D
oklch(52% 0.042 95.7)
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 #616781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.039
- Dim Gray #696969 ΔE 0.042
- Battleship Gray #6C757D ΔE 0.048
- Dusty Grape #545775 ΔE 0.053
- Dull Blue #49759C ΔE 0.054
- Denim #3B638C ΔE 0.054
- Dusky Blue #475F94 ΔE 0.057
Use #616781 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.