#659EEB
Closest named color: Cornflower Blue (#6495ED). oklch(69.3% 0.129 256.3), rgb(101, 158, 235).
Aa
Black text reads best on this color (7.64:1).
About this color
#659EEB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.129 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.025 away. Black text reads best on it, at 7.64:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.64:1 |
| White text | 2.74:1 |
Values
| HEX | #659EEB |
| RGB | rgb(101, 158, 235) |
| HSL | hsl(214, 77%, 66%) |
| OKLCH | oklch(69.3% 0.129 256.3) |
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 #659EEB | 2.74:1 | Fails | Lc -58.2 | Large or bold text, headings |
| Black text on #659EEB | 7.64:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #659EEB text on white | 2.74:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #659EEB text on black | 7.64:1 | AAA | Lc -48.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9FC3F5
oklch(80.9% 0.081 256.7)
-
Step 400
400 (this color)
#659EEB
oklch(69.3% 0.129 256.3)
-
Step 500
500
#3E89EB
oklch(63.2% 0.165 256.3)
-
Step 600
600
#1770D9
oklch(55.6% 0.179 256.4)
-
Step 700
700
#055DBC
oklch(49.1% 0.167 256.3)
-
Step 800
800
#0C4D98
oklch(42.8% 0.137 256.1)
-
Step 900
900
#144179
oklch(37.8% 0.107 256)
-
Step 950
950
#0D2647
oklch(26.9% 0.069 256.4)
#659EEB 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) | #7EA3EE | 0.032 |
| Deuteranopia (no green cones) | #6D96E9 | 0.021 |
| Tritanopia (no blue cones) | #00AFBA | 0.111 |
| Achromatopsia (no color) | #9C9C9C | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659EEB
#659EEB
oklch(69.3% 0.129 256.3)
- #C9902E
#C9902E
oklch(69.3% 0.129 76.5)
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 #659EEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.057
- Periwinkle Blue #8F99FB ΔE 0.057
- Soft Blue #6488EA ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.063
- Dodger Blue #1E90FF ΔE 0.074
- Lavender Blue #8B88F8 ΔE 0.074
Use #659EEB 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.