#618497
Closest named color: Grey Blue (#647D8E). oklch(59.4% 0.049 232.4), rgb(97, 132, 151).
Aa
Black text reads best on this color (5.25:1).
About this color
#618497 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.049 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.021 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #618497 |
| RGB | rgb(97, 132, 151) |
| HSL | hsl(201, 22%, 49%) |
| OKLCH | oklch(59.4% 0.049 232.4) |
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 #618497 | 3.99:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #618497 | 5.25:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #618497 text on white | 3.99:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #618497 text on black | 5.25:1 | AA | Lc -34.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B2C4CE
oklch(81% 0.024 231.9)
-
Step 400
400
#89A5B5
oklch(70.6% 0.039 233.1)
-
Step 500
500 (this color)
#618497
oklch(59.4% 0.049 232.4)
-
Step 600
600
#53798D
oklch(55.5% 0.053 231.9)
-
Step 700
700
#436678
oklch(49.1% 0.049 231.5)
-
Step 800
800
#385362
oklch(42.7% 0.041 233.3)
-
Step 900
900
#304550
oklch(37.7% 0.032 231.5)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#618497 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) | #7B8398 | 0.034 |
| Deuteranopia (no green cones) | #737D97 | 0.029 |
| Tritanopia (no blue cones) | #4E898A | 0.036 |
| Achromatopsia (no color) | #7F7F7F | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618497
#618497
oklch(59.4% 0.049 232.4)
- #977764
#977764
oklch(59.5% 0.049 52.2)
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 #618497, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.021
- Slate Gray #708090 ΔE 0.021
- Steel #738595 ΔE 0.023
- Steel Grey #6F828A ΔE 0.024
- Battleship Grey #6B7C85 ΔE 0.031
- Light Slate Gray #778899 ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.033
- Off Blue #5684AE ΔE 0.037
Use #618497 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.