#578799
Closest named color: Grey Blue (#647D8E). oklch(59.6% 0.059 223.7), rgb(87, 135, 153).
Aa
Black text reads best on this color (5.33:1).
About this color
#578799 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.059 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.030 away. Black text reads best on it, at 5.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #578799 |
| RGB | rgb(87, 135, 153) |
| HSL | hsl(196, 27%, 47%) |
| OKLCH | oklch(59.6% 0.059 223.7) |
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 #578799 | 3.93:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #578799 | 5.33:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #578799 text on white | 3.93:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #578799 text on black | 5.33:1 | AA | Lc -35.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDCE1
oklch(88.6% 0.016 222.7)
-
Step 300
300
#AEC5CE
oklch(80.9% 0.028 223.3)
-
Step 400
400
#82A7B6
oklch(70.6% 0.046 224.7)
-
Step 500
500 (this color)
#578799
oklch(59.6% 0.059 223.7)
-
Step 600
600
#477C8F
oklch(55.7% 0.064 223.2)
-
Step 700
700
#38687A
oklch(49.1% 0.06 224.5)
-
Step 800
800
#2F5563
oklch(42.7% 0.049 223.9)
-
Step 900
900
#2A4651
oklch(37.7% 0.039 224.9)
-
Step 950
950
#19292F
oklch(26.9% 0.024 223.4)
#578799 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) | #7D859A | 0.048 |
| Deuteranopia (no green cones) | #737D99 | 0.043 |
| Tritanopia (no blue cones) | #3B8D8D | 0.039 |
| Achromatopsia (no color) | #808080 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578799
#578799
oklch(59.6% 0.059 223.7)
- #9E7463
#9E7463
oklch(59.7% 0.059 43)
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 #578799, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.033
- Steel #738595 ΔE 0.033
- Slate Gray #708090 ΔE 0.033
- Steel Grey #6F828A ΔE 0.033
- Off Blue #5684AE ΔE 0.037
- Stormy Blue #507B9C ΔE 0.039
- Light Slate Gray #778899 ΔE 0.040
Use #578799 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.