#618196
Closest named color: Grey Blue (#647D8E). oklch(58.7% 0.049 237.4), rgb(97, 129, 150).
Aa
Black text reads best on this color (5.08:1).
About this color
#618196 is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.049 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.014 away. Black text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.08:1 |
| White text | 4.12:1 |
Values
| HEX | #618196 |
| RGB | rgb(97, 129, 150) |
| HSL | hsl(204, 21%, 48%) |
| OKLCH | oklch(58.7% 0.049 237.4) |
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 #618196 | 4.12:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #618196 | 5.08:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #618196 text on white | 4.12:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #618196 text on black | 5.08:1 | AA | Lc -33.3 | 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
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE0
oklch(88.4% 0.012 239.9)
-
Step 300
300
#B4C3CD
oklch(80.9% 0.022 236.8)
-
Step 400
400
#8DA4B4
oklch(70.6% 0.035 238.4)
-
Step 500
500
#708EA2
oklch(63.1% 0.045 237.6)
-
Step 600
600 (this color)
#618196
oklch(58.7% 0.049 237.4)
-
Step 700
700
#486578
oklch(49.2% 0.046 237.6)
-
Step 800
800
#3B5261
oklch(42.6% 0.038 237.4)
-
Step 900
900
#33444F
oklch(37.7% 0.029 236.9)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#618196 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) | #788097 | 0.030 |
| Deuteranopia (no green cones) | #707A96 | 0.027 |
| Tritanopia (no blue cones) | #4F8688 | 0.037 |
| Achromatopsia (no color) | #7D7D7D | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618196
#618196
oklch(58.7% 0.049 237.4)
- #937560
#937560
oklch(58.6% 0.049 56.6)
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 #618196, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.014
- Slate Gray #708090 ΔE 0.020
- Steel Grey #6F828A ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.027
- Steel #738595 ΔE 0.027
- Stormy Blue #507B9C ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.034
- Off Blue #5684AE ΔE 0.037
Use #618196 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.