#558090
Closest named color: Grey Blue (#647D8E). oklch(57.5% 0.053 223.3), rgb(85, 128, 144).
Aa
Black text reads best on this color (4.87:1).
About this color
#558090 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.053 and its hue 223°. 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 4.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #558090 |
| RGB | rgb(85, 128, 144) |
| HSL | hsl(196, 26%, 45%) |
| OKLCH | oklch(57.5% 0.053 223.3) |
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 #558090 | 4.30:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #558090 | 4.87:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #558090 text on white | 4.30:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #558090 text on black | 4.87:1 | AA | Lc -31.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B1C4CC
oklch(80.8% 0.024 224.9)
-
Step 400
400
#87A6B2
oklch(70.6% 0.038 223.4)
-
Step 500
500
#69909F
oklch(63% 0.049 223.7)
-
Step 600
600 (this color)
#558090
oklch(57.5% 0.053 223.3)
-
Step 700
700
#406775
oklch(49% 0.049 222.8)
-
Step 800
800
#355460
oklch(42.7% 0.042 224.4)
-
Step 900
900
#2F464E
oklch(37.9% 0.032 221.6)
-
Step 950
950
#1C292E
oklch(27.1% 0.02 223.6)
#558090 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) | #777E91 | 0.044 |
| Deuteranopia (no green cones) | #6E7790 | 0.039 |
| Tritanopia (no blue cones) | #3E8585 | 0.035 |
| Achromatopsia (no color) | #7A7A7A | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558090
#558090
oklch(57.5% 0.053 223.3)
- #946F5F
#946F5F
oklch(57.4% 0.053 44.5)
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 #558090, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.019
- Stormy Blue #507B9C ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.029
- Cerulean #457B9D ΔE 0.033
- Slate Gray #708090 ΔE 0.034
- Steel Grey #6F828A ΔE 0.034
- Metallic Blue #4F738E ΔE 0.040
- Battleship Gray #6C757D ΔE 0.042
Use #558090 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.