#579FC0
Closest named color: Greyblue (#77A1B5). oklch(66.9% 0.087 229.7), rgb(87, 159, 192).
Aa
Black text reads best on this color (7.12:1).
About this color
#579FC0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.087 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.037 away. Black text reads best on it, at 7.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.12:1 |
| White text | 2.94:1 |
Values
| HEX | #579FC0 |
| RGB | rgb(87, 159, 192) |
| HSL | hsl(199, 45%, 55%) |
| OKLCH | oklch(66.9% 0.087 229.7) |
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 #579FC0 | 2.94:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #579FC0 | 7.12:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #579FC0 text on white | 2.94:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #579FC0 text on black | 7.12:1 | AAA | Lc -46.0 | Large or bold text, headings |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A5C6D7
oklch(80.8% 0.043 230.3)
-
Step 400
400
#73A9C3
oklch(70.7% 0.068 229.7)
-
Step 500
500 (this color)
#579FC0
oklch(66.9% 0.087 229.7)
-
Step 600
600
#297DA0
oklch(55.6% 0.095 230)
-
Step 700
700
#1A6989
oklch(49% 0.089 230.4)
-
Step 800
800
#19566F
oklch(42.7% 0.073 229.7)
-
Step 900
900
#1C475A
oklch(37.7% 0.057 230)
-
Step 950
950
#122A35
oklch(27.1% 0.036 229.8)
#579FC0 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) | #8E9DC2 | 0.062 |
| Deuteranopia (no green cones) | #7F91C0 | 0.055 |
| Tritanopia (no blue cones) | #00A8AA | 0.063 |
| Achromatopsia (no color) | #969696 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579FC0
#579FC0
oklch(66.9% 0.087 229.7)
- #C18564
#C18564
oklch(66.9% 0.087 49.6)
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 #579FC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.037
- Cadet Blue #5F9EA0 ΔE 0.048
- Faded Blue #658CBB ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.056
- Turquoise Blue #06B1C4 ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.057
- Bluey Grey #89A0B0 ΔE 0.058
- Blue Grey #758DA3 ΔE 0.060
Use #579FC0 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.