#558498
Closest named color: Grey Blue (#647D8E). oklch(58.7% 0.06 226.8), rgb(85, 132, 152).
Aa
Black text reads best on this color (5.14:1).
About this color
#558498 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.060 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.025 away. Black text reads best on it, at 5.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.14:1 |
| White text | 4.08:1 |
Values
| HEX | #558498 |
| RGB | rgb(85, 132, 152) |
| HSL | hsl(198, 28%, 46%) |
| OKLCH | oklch(58.7% 0.06 226.8) |
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 #558498 | 4.08:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #558498 | 5.14:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #558498 text on white | 4.08:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #558498 text on black | 5.14:1 | AA | Lc -33.7 | 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
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#CFDBE1
oklch(88.4% 0.015 229)
-
Step 300
300
#AFC5CE
oklch(81% 0.027 224.3)
-
Step 400
400
#85A7B5
oklch(70.8% 0.042 224.9)
-
Step 500
500
#6691A3
oklch(63.2% 0.054 225.9)
-
Step 600
600 (this color)
#558498
oklch(58.7% 0.06 226.8)
-
Step 700
700
#3D6779
oklch(49% 0.055 227.3)
-
Step 800
800
#335462
oklch(42.6% 0.045 226.8)
-
Step 900
900
#2D4650
oklch(37.8% 0.035 225)
-
Step 950
950
#1A292F
oklch(27% 0.023 224.8)
#558498 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) | #798299 | 0.045 |
| Deuteranopia (no green cones) | #6F7A98 | 0.041 |
| Tritanopia (no blue cones) | #388A8A | 0.042 |
| Achromatopsia (no color) | #7E7E7E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558498
#558498
oklch(58.7% 0.06 226.8)
- #9B725E
#9B725E
oklch(58.8% 0.06 47.1)
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 #558498, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.025
- Stormy Blue #507B9C ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.033
- Slate Gray #708090 ΔE 0.033
- Off Blue #5684AE ΔE 0.035
- Steel Grey #6F828A ΔE 0.035
- Cerulean #457B9D ΔE 0.036
- Steel #738595 ΔE 0.037
Use #558498 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.