#618393
Closest named color: Grey Blue (#647D8E). oklch(59% 0.045 228.6), rgb(97, 131, 147).
Aa
Black text reads best on this color (5.17:1).
About this color
#618393 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.045 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.017 away. Black text reads best on it, at 5.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #618393 |
| RGB | rgb(97, 131, 147) |
| HSL | hsl(199, 20%, 48%) |
| OKLCH | oklch(59% 0.045 228.6) |
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 #618393 | 4.05:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #618393 | 5.17:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #618393 text on white | 4.05:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #618393 text on black | 5.17:1 | AA | Lc -33.9 | 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 600.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C3CB
oklch(80.8% 0.02 230.8)
-
Step 400
400
#8CA5B1
oklch(70.7% 0.033 228.4)
-
Step 500
500
#6F8F9E
oklch(63.1% 0.042 228.2)
-
Step 600
600 (this color)
#618393
oklch(59% 0.045 228.6)
-
Step 700
700
#476674
oklch(49.2% 0.042 227.8)
-
Step 800
800
#3B535E
oklch(42.7% 0.034 228)
-
Step 900
900
#32454D
oklch(37.8% 0.028 225.7)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#618393 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) | #7B8194 | 0.035 |
| Deuteranopia (no green cones) | #737C93 | 0.029 |
| Tritanopia (no blue cones) | #508888 | 0.032 |
| Achromatopsia (no color) | #7E7E7E | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618393
#618393
oklch(59% 0.045 228.6)
- #947666
#947666
oklch(59% 0.045 49.5)
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 #618393, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.017
- Slate Gray #708090 ΔE 0.020
- Steel Grey #6F828A ΔE 0.021
- Steel #738595 ΔE 0.025
- Battleship Grey #6B7C85 ΔE 0.026
- Light Slate Gray #778899 ΔE 0.034
- Stormy Blue #507B9C ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.039
Use #618393 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.