#618396
Closest named color: Grey Blue (#647D8E). oklch(59.1% 0.048 233.1), rgb(97, 131, 150).
Aa
Black text reads best on this color (5.19:1).
About this color
#618396 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.048 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.018 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #618396 |
| RGB | rgb(97, 131, 150) |
| HSL | hsl(202, 21%, 48%) |
| OKLCH | oklch(59.1% 0.048 233.1) |
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 #618396 | 4.04:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #618396 | 5.19:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #618396 text on white | 4.04:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #618396 text on black | 5.19:1 | AA | Lc -34.0 | 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
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B4C3CD
oklch(80.9% 0.022 236.8)
-
Step 400
400
#8CA5B3
oklch(70.7% 0.035 232.5)
-
Step 500
500
#6F8FA0
oklch(63.2% 0.044 231.5)
-
Step 600
600 (this color)
#618396
oklch(59.1% 0.048 233.1)
-
Step 700
700
#476576
oklch(49% 0.044 233.7)
-
Step 800
800
#3A5360
oklch(42.7% 0.037 231.4)
-
Step 900
900
#32444F
oklch(37.6% 0.03 235.4)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#618396 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) | #7A8297 | 0.033 |
| Deuteranopia (no green cones) | #727C96 | 0.028 |
| Tritanopia (no blue cones) | #4F8889 | 0.035 |
| Achromatopsia (no color) | #7E7E7E | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618396
#618396
oklch(59.1% 0.048 233.1)
- #957663
#957663
oklch(59.1% 0.048 53)
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 #618396, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.018
- Slate Gray #708090 ΔE 0.020
- Steel Grey #6F828A ΔE 0.024
- Steel #738595 ΔE 0.024
- Battleship Grey #6B7C85 ΔE 0.029
- Light Slate Gray #778899 ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.034
- Stormy Blue #507B9C ΔE 0.036
Use #618396 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.