#558998
Closest named color: Grey Blue (#647D8E). oklch(59.9% 0.06 218.1), rgb(85, 137, 152).
Aa
Black text reads best on this color (5.41:1).
About this color
#558998 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.060 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.035 away. Black text reads best on it, at 5.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #558998 |
| RGB | rgb(85, 137, 152) |
| HSL | hsl(193, 28%, 46%) |
| OKLCH | oklch(59.9% 0.06 218.1) |
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 #558998 | 3.87:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #558998 | 5.41:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #558998 text on white | 3.87:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #558998 text on black | 5.41:1 | AA | Lc -35.5 | 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 500.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE0
oklch(88.5% 0.016 216.7)
-
Step 300
300
#ACC6CD
oklch(80.9% 0.03 215.8)
-
Step 400
400
#80A8B4
oklch(70.7% 0.047 218.2)
-
Step 500
500 (this color)
#558998
oklch(59.9% 0.06 218.1)
-
Step 600
600
#437D8D
oklch(55.7% 0.065 217.8)
-
Step 700
700
#346978
oklch(49.1% 0.061 218.6)
-
Step 800
800
#2C5661
oklch(42.7% 0.05 216.8)
-
Step 900
900
#28474F
oklch(37.7% 0.039 216.1)
-
Step 950
950
#18292F
oklch(26.9% 0.025 222.2)
#558998 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) | #7F8699 | 0.052 |
| Deuteranopia (no green cones) | #757E98 | 0.048 |
| Tritanopia (no blue cones) | #378E8E | 0.036 |
| Achromatopsia (no color) | #818181 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558998
#558998
oklch(59.9% 0.06 218.1)
- #A07466
#A07466
oklch(59.9% 0.06 38.4)
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 #558998, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.035
- Steel Grey #6F828A ΔE 0.035
- Steel #738595 ΔE 0.036
- Slate Gray #708090 ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.037
- Light Slate Gray #778899 ΔE 0.041
- Off Blue #5684AE ΔE 0.041
- Dusty Teal #4C9085 ΔE 0.043
Use #558998 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.