#578FA3
Closest named color: Dusty Blue (#5A86AD). oklch(61.9% 0.066 222.9), rgb(87, 143, 163).
Aa
Black text reads best on this color (5.86:1).
About this color
#578FA3 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.066 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.034 away. Black text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.86:1 |
| White text | 3.58:1 |
Values
| HEX | #578FA3 |
| RGB | rgb(87, 143, 163) |
| HSL | hsl(196, 30%, 49%) |
| OKLCH | oklch(61.9% 0.066 222.9) |
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 #578FA3 | 3.58:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #578FA3 | 5.86:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #578FA3 text on white | 3.58:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #578FA3 text on black | 5.86:1 | AA | Lc -38.4 | 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
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6D0
oklch(81% 0.032 222.1)
-
Step 400
400
#7DA8B8
oklch(70.6% 0.052 222.9)
-
Step 500
500 (this color)
#578FA3
oklch(61.9% 0.066 222.9)
-
Step 600
600
#3E7D92
oklch(55.7% 0.072 222.3)
-
Step 700
700
#30697C
oklch(49.1% 0.067 222.6)
-
Step 800
800
#295665
oklch(42.8% 0.055 222.2)
-
Step 900
900
#264752
oklch(37.8% 0.043 221.6)
-
Step 950
950
#172930
oklch(26.9% 0.027 224.6)
#578FA3 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) | #838CA4 | 0.053 |
| Deuteranopia (no green cones) | #7883A3 | 0.049 |
| Tritanopia (no blue cones) | #339595 | 0.044 |
| Achromatopsia (no color) | #878787 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #578FA3
#578FA3
oklch(61.9% 0.066 222.9)
- #A97966
#A97966
oklch(61.9% 0.067 42.5)
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 #578FA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.034
- Blue Grey #758DA3 ΔE 0.034
- Light Slate Gray #778899 ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.040
- Steel #738595 ΔE 0.040
- Off Blue #5684AE ΔE 0.041
- Faded Blue #658CBB ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.048
Use #578FA3 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.