#59A5EA
Closest named color: Cornflower Blue (#6495ED). oklch(70.3% 0.127 248), rgb(89, 165, 234).
Aa
Black text reads best on this color (7.99:1).
About this color
#59A5EA is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.127 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.044 away. Black text reads best on it, at 7.99:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.99:1 |
| White text | 2.62:1 |
Values
| HEX | #59A5EA |
| RGB | rgb(89, 165, 234) |
| HSL | hsl(209, 78%, 63%) |
| OKLCH | oklch(70.3% 0.127 248) |
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 #59A5EA | 2.62:1 | Fails | Lc -56.1 | Large or bold text, headings |
| Black text on #59A5EA | 7.99:1 | AAA | Lc 53.0 | Large or bold text, headings |
| #59A5EA text on white | 2.62:1 | Fails | Lc 51.0 | Large or bold text, headings |
| #59A5EA text on black | 7.99:1 | AAA | Lc -50.9 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C3DCF5
oklch(88.4% 0.044 248.3)
-
Step 300
300
#98C6F2
oklch(81% 0.079 247.7)
-
Step 400
400 (this color)
#59A5EA
oklch(70.3% 0.127 248)
-
Step 500
500
#188EE5
oklch(63.1% 0.162 247.9)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#004474
oklch(37.7% 0.101 247.8)
-
Step 950
950
#042845
oklch(27% 0.067 247.8)
#59A5EA 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) | #87A7ED | 0.049 |
| Deuteranopia (no green cones) | #7399E9 | 0.038 |
| Tritanopia (no blue cones) | #00B5BD | 0.100 |
| Achromatopsia (no color) | #A0A0A0 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59A5EA
#59A5EA
oklch(70.3% 0.127 248)
- #D38F3C
#D38F3C
oklch(70.3% 0.127 68.1)
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 #59A5EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.067
- Deep Sky Blue #00BFFF ΔE 0.071
- Periwinkle Blue #8F99FB ΔE 0.072
- Soft Blue #6488EA ΔE 0.077
- Carolina Blue #8AB8FE ΔE 0.079
- Greyblue #77A1B5 ΔE 0.079
Use #59A5EA 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.