#659BD4
Closest named color: Cornflower Blue (#6495ED). oklch(67.5% 0.103 250.8), rgb(101, 155, 212).
Aa
Black text reads best on this color (7.19:1).
About this color
#659BD4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.103 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.045 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.19:1 |
| White text | 2.91:1 |
Values
| HEX | #659BD4 |
| RGB | rgb(101, 155, 212) |
| HSL | hsl(211, 56%, 61%) |
| OKLCH | oklch(67.5% 0.103 250.8) |
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 #659BD4 | 2.91:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #659BD4 | 7.19:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #659BD4 text on white | 2.91:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #659BD4 text on black | 7.19:1 | AAA | Lc -46.3 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DBF0
oklch(88.4% 0.036 250.9)
-
Step 300
300
#A2C4E9
oklch(80.8% 0.064 250.8)
-
Step 400
400 (this color)
#659BD4
oklch(67.5% 0.103 250.8)
-
Step 500
500
#458DD6
oklch(63.1% 0.132 251)
-
Step 600
600
#2276C3
oklch(55.7% 0.142 250.8)
-
Step 700
700
#1363A8
oklch(49.2% 0.132 250.5)
-
Step 800
800
#145188
oklch(42.7% 0.109 250.5)
-
Step 900
900
#19436D
oklch(37.6% 0.086 251.2)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#659BD4 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) | #849DD7 | 0.037 |
| Deuteranopia (no green cones) | #7692D3 | 0.029 |
| Tritanopia (no blue cones) | #27A8AF | 0.089 |
| Achromatopsia (no color) | #979797 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659BD4
#659BD4
oklch(67.5% 0.103 250.8)
- #BF8B4B
#BF8B4B
oklch(67.5% 0.103 70.2)
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 #659BD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.045
- Faded Blue #658CBB ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.054
- Greyblue #77A1B5 ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.058
- Silver Lake Blue #778DA9 ΔE 0.066
- Soft Blue #6488EA ΔE 0.067
- Cool Gray #8D99AE ΔE 0.070
Use #659BD4 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.