#558F9E
Closest named color: Blue Grey (#758DA3). oklch(61.6% 0.065 216.2), rgb(85, 143, 158).
Aa
Black text reads best on this color (5.80:1).
About this color
#558F9E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.065 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.039 away. Black text reads best on it, at 5.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.80:1 |
| White text | 3.61:1 |
Values
| HEX | #558F9E |
| RGB | rgb(85, 143, 158) |
| HSL | hsl(192, 30%, 48%) |
| OKLCH | oklch(61.6% 0.065 216.2) |
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 #558F9E | 3.61:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #558F9E | 5.80:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #558F9E text on white | 3.61:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #558F9E text on black | 5.80:1 | AA | Lc -38.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE1
oklch(88.5% 0.018 219.7)
-
Step 300
300
#ABC6CE
oklch(80.9% 0.031 217.5)
-
Step 400
400
#7DA9B5
oklch(70.7% 0.05 216.4)
-
Step 500
500 (this color)
#558F9E
oklch(61.6% 0.065 216.2)
-
Step 600
600
#3D7E8E
oklch(55.7% 0.07 216)
-
Step 700
700
#2E6A78
oklch(49.1% 0.065 215.4)
-
Step 800
800
#285662
oklch(42.6% 0.054 217.1)
-
Step 900
900
#254750
oklch(37.6% 0.042 216.9)
-
Step 950
950
#172A2F
oklch(27.1% 0.026 216.3)
#558F9E 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) | #858C9F | 0.058 |
| Deuteranopia (no green cones) | #79839E | 0.052 |
| Tritanopia (no blue cones) | #329594 | 0.038 |
| Achromatopsia (no color) | #878787 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F9E
#558F9E
oklch(61.6% 0.065 216.2)
- #A8776A
#A8776A
oklch(61.5% 0.065 35.4)
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 #558F9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.040
- Steel #738595 ΔE 0.041
- Light Slate Gray #778899 ΔE 0.041
- Dusty Teal #4C9085 ΔE 0.042
- Sea #3C9992 ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.045
- Steel Grey #6F828A ΔE 0.046
Use #558F9E 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.