#599AFF
Closest named color: Cornflower Blue (#6495ED). oklch(69% 0.164 258.9), rgb(89, 154, 255).
Aa
Black text reads best on this color (7.49:1).
About this color
#599AFF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.164 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.028 away. Black text reads best on it, at 7.49:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #599AFF |
| RGB | rgb(89, 154, 255) |
| HSL | hsl(217, 100%, 67%) |
| OKLCH | oklch(69% 0.164 258.9) |
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 #599AFF | 2.80:1 | Fails | Lc -58.9 | Large or bold text, headings |
| Black text on #599AFF | 7.49:1 | AAA | Lc 50.4 | Large or bold text, headings |
| #599AFF text on white | 2.80:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #599AFF text on black | 7.49:1 | AAA | Lc -48.2 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400 (this color)
#599AFF
oklch(69% 0.164 258.9)
-
Step 500
500
#3384FF
oklch(63.1% 0.199 259)
-
Step 600
600
#006AED
oklch(55.6% 0.214 258.9)
-
Step 700
700
#0059C9
oklch(49.2% 0.189 258.8)
-
Step 800
800
#0048A7
oklch(42.7% 0.165 259)
-
Step 900
900
#083D88
oklch(37.7% 0.136 259)
-
Step 950
950
#082450
oklch(26.9% 0.088 259.4)
#599AFF 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) | #6CA3FF | 0.032 |
| Deuteranopia (no green cones) | #5393FD | 0.020 |
| Tritanopia (no blue cones) | #00B1C0 | 0.133 |
| Achromatopsia (no color) | #9A9A9A | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599AFF
#599AFF
oklch(69% 0.164 258.9)
- #CA8F00
#CA8F00
oklch(69% 0.143 79.3)
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 #599AFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.028
- Chefchaouen Blue #4895EF ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.050
- Soft Blue #6488EA ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.054
- Periwinkle Blue #8F99FB ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.071
Use #599AFF 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.