#558097
Closest named color: Stormy Blue (#507B9C). oklch(57.7% 0.059 232.5), rgb(85, 128, 151).
Aa
Black text reads best on this color (4.92:1).
About this color
#558097 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.059 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.020 away. Black text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #558097 |
| RGB | rgb(85, 128, 151) |
| HSL | hsl(201, 28%, 46%) |
| OKLCH | oklch(57.7% 0.059 232.5) |
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 #558097 | 4.26:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #558097 | 4.92:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #558097 text on white | 4.26:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #558097 text on black | 4.92:1 | AA | Lc -32.2 | 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
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B0C4CF
oklch(80.9% 0.027 231.7)
-
Step 400
400
#87A6B7
oklch(70.8% 0.042 232.1)
-
Step 500
500
#6890A5
oklch(63.2% 0.054 231.6)
-
Step 600
600 (this color)
#558097
oklch(57.7% 0.059 232.5)
-
Step 700
700
#3F667B
oklch(49% 0.056 233.1)
-
Step 800
800
#355464
oklch(42.8% 0.045 231.7)
-
Step 900
900
#2E4551
oklch(37.7% 0.035 231.6)
-
Step 950
950
#1B2830
oklch(26.9% 0.023 235.8)
#558097 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) | #757F98 | 0.040 |
| Deuteranopia (no green cones) | #6C7797 | 0.037 |
| Tritanopia (no blue cones) | #3A8687 | 0.044 |
| Achromatopsia (no color) | #7A7A7A | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558097
#558097
oklch(57.7% 0.059 232.5)
- #967059
#967059
oklch(57.7% 0.059 52.4)
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 #558097, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.020
- Grey Blue #647D8E ΔE 0.021
- Cerulean #457B9D ΔE 0.027
- Slate Gray #708090 ΔE 0.034
- Battleship Grey #6B7C85 ΔE 0.035
- Off Blue #5684AE ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.036
- Steel Grey #6F828A ΔE 0.038
Use #558097 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.