#559CED
Closest named color: Cornflower Blue (#6495ED). oklch(68.3% 0.14 253.2), rgb(85, 156, 237).
Aa
Black text reads best on this color (7.36:1).
About this color
#559CED is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.140 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.022 away. Black text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #559CED |
| RGB | rgb(85, 156, 237) |
| HSL | hsl(212, 81%, 63%) |
| OKLCH | oklch(68.3% 0.14 253.2) |
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 #559CED | 2.85:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #559CED | 7.36:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #559CED text on white | 2.85:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #559CED text on black | 7.36:1 | AAA | Lc -47.4 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#99C4F8
oklch(80.8% 0.087 253.5)
-
Step 400
400 (this color)
#559CED
oklch(68.3% 0.14 253.2)
-
Step 500
500
#238AF1
oklch(63.1% 0.178 253.1)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004F95
oklch(42.8% 0.133 253.1)
-
Step 900
900
#00417D
oklch(37.6% 0.117 253.3)
-
Step 950
950
#062749
oklch(27.1% 0.073 252.8)
#559CED 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) | #79A1F0 | 0.041 |
| Deuteranopia (no green cones) | #6492EB | 0.028 |
| Tritanopia (no blue cones) | #00AFB9 | 0.113 |
| Achromatopsia (no color) | #999999 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #559CED
#559CED
oklch(68.3% 0.14 253.2)
- #CC8916
#CC8916
oklch(68.2% 0.14 73.2)
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 #559CED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.043
- Soft Blue #6488EA ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.059
- Periwinkle Blue #8F99FB ΔE 0.069
- Perrywinkle #8F8CE7 ΔE 0.072
- Faded Blue #658CBB ΔE 0.077
Use #559CED 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.