#5B697F
Closest named color: Slate (#516572). oklch(51.7% 0.039 259.4), rgb(91, 105, 127).
Aa
White text reads best on this color (5.56:1).
About this color
#5B697F is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.039 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.027 away. White text reads best on it, at 5.56:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #5B697F |
| RGB | rgb(91, 105, 127) |
| HSL | hsl(217, 17%, 43%) |
| OKLCH | oklch(51.7% 0.039 259.4) |
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 #5B697F | 5.56:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #5B697F | 3.77:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #5B697F text on white | 5.56:1 | AA | Lc 77.8 | Fine for body text |
| #5B697F text on black | 3.77:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9E0
oklch(88.4% 0.011 261.8)
-
Step 300
300
#B9C1CD
oklch(80.8% 0.019 258.4)
-
Step 400
400
#96A1B4
oklch(70.6% 0.03 261.4)
-
Step 500
500
#7C8AA1
oklch(63% 0.038 260.3)
-
Step 600
600
#65748C
oklch(55.6% 0.042 259.8)
-
Step 700
700 (this color)
#5B697F
oklch(51.7% 0.039 259.4)
-
Step 800
800
#455061
oklch(42.8% 0.032 259)
-
Step 900
900
#3A424F
oklch(37.7% 0.025 260.1)
-
Step 950
950
#22272E
oklch(27.1% 0.015 256.8)
#5B697F 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) | #626A80 | 0.011 |
| Deuteranopia (no green cones) | #5E677F | 0.007 |
| Tritanopia (no blue cones) | #516E70 | 0.036 |
| Achromatopsia (no color) | #686868 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B697F
#5B697F
oklch(51.7% 0.039 259.4)
- #74664F
#74664F
oklch(51.7% 0.039 80)
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 #5B697F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.027
- Metallic Blue #4F738E ΔE 0.033
- Dim Gray #696969 ΔE 0.039
- Battleship Gray #6C757D ΔE 0.046
- Dull Blue #49759C ΔE 0.051
- Denim #3B638C ΔE 0.051
- Dusty Grape #545775 ΔE 0.054
- Muted Blue #3B719F ΔE 0.057
Use #5B697F 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.