#579ECF
Closest named color: Faded Blue (#658CBB). oklch(67.3% 0.102 240.7), rgb(87, 158, 207).
Aa
Black text reads best on this color (7.19:1).
About this color
#579ECF is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.102 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.051 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.19:1 |
| White text | 2.91:1 |
Values
| HEX | #579ECF |
| RGB | rgb(87, 158, 207) |
| HSL | hsl(205, 56%, 58%) |
| OKLCH | oklch(67.3% 0.102 240.7) |
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 #579ECF | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #579ECF | 7.19:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #579ECF text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #579ECF text on black | 7.19:1 | AAA | Lc -46.4 | 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 400.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9CC7E6
oklch(81% 0.063 239.9)
-
Step 400
400 (this color)
#579ECF
oklch(67.3% 0.102 240.7)
-
Step 500
500
#2A92D0
oklch(63.1% 0.13 240.5)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#04466A
oklch(37.7% 0.085 240.8)
-
Step 950
950
#08293E
oklch(26.9% 0.054 241.2)
#579ECF 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) | #889ED1 | 0.054 |
| Deuteranopia (no green cones) | #7892CE | 0.045 |
| Tritanopia (no blue cones) | #00AAAF | 0.079 |
| Achromatopsia (no color) | #979797 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579ECF
#579ECF
oklch(67.3% 0.102 240.7)
- #C48752
#C48752
oklch(67.4% 0.102 60.7)
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 #579ECF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.051
- Greyblue #77A1B5 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.058
- Chefchaouen Blue #4895EF ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.064
- Silver Lake Blue #778DA9 ΔE 0.067
- Turquoise Blue #06B1C4 ΔE 0.068
- Bluegrey #85A3B2 ΔE 0.068
Use #579ECF 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.