#58818C
Closest named color: Grey Blue (#647D8E). oklch(57.7% 0.048 216.4), rgb(88, 129, 140).
Aa
Black text reads best on this color (4.93:1).
About this color
#58818C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 58%, its chroma 0.048 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.019 away. Black text reads best on it, at 4.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #58818C |
| RGB | rgb(88, 129, 140) |
| HSL | hsl(193, 23%, 45%) |
| OKLCH | oklch(57.7% 0.048 216.4) |
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 #58818C | 4.25:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #58818C | 4.93:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #58818C text on white | 4.25:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #58818C text on black | 4.93:1 | AA | Lc -32.3 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B2C4CA
oklch(80.8% 0.021 219.7)
-
Step 400
400
#89A6AF
oklch(70.6% 0.035 218.6)
-
Step 500
500
#6B919B
oklch(63.2% 0.045 215.8)
-
Step 600
600 (this color)
#58818C
oklch(57.7% 0.048 216.4)
-
Step 700
700
#426771
oklch(49% 0.045 216.7)
-
Step 800
800
#37545C
oklch(42.6% 0.037 216.9)
-
Step 900
900
#30464C
oklch(37.8% 0.029 216.5)
-
Step 950
950
#1C292C
oklch(27% 0.019 213.5)
#58818C 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) | #797E8D | 0.043 |
| Deuteranopia (no green cones) | #71788C | 0.039 |
| Tritanopia (no blue cones) | #458584 | 0.028 |
| Achromatopsia (no color) | #7B7B7B | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #58818C
#58818C
oklch(57.7% 0.048 216.4)
- #947066
#947066
oklch(57.8% 0.048 36.1)
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 #58818C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.019
- Battleship Grey #6B7C85 ΔE 0.026
- Steel Grey #6F828A ΔE 0.029
- Slate Gray #708090 ΔE 0.032
- Stormy Blue #507B9C ΔE 0.036
- Steel #738595 ΔE 0.040
- Battleship Gray #6C757D ΔE 0.040
- Cerulean #457B9D ΔE 0.041
Use #58818C 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.