#599AFD
Closest named color: Cornflower Blue (#6495ED). oklch(68.9% 0.161 258.6), rgb(89, 154, 253).
Aa
Black text reads best on this color (7.46:1).
About this color
#599AFD is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.161 and its hue 259°. 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 7.46:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #599AFD |
| RGB | rgb(89, 154, 253) |
| HSL | hsl(216, 98%, 67%) |
| OKLCH | oklch(68.9% 0.161 258.6) |
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 #599AFD | 2.81:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #599AFD | 7.46:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #599AFD text on white | 2.81:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #599AFD text on black | 7.46:1 | AAA | Lc -48.0 | 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)
#599AFD
oklch(68.9% 0.161 258.6)
-
Step 500
500
#3184FF
oklch(63% 0.2 258.7)
-
Step 600
600
#006BEB
oklch(55.7% 0.21 258.5)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0049A5
oklch(42.7% 0.162 258.5)
-
Step 900
900
#083D87
oklch(37.7% 0.135 258.8)
-
Step 950
950
#08254F
oklch(27.1% 0.085 258.3)
#599AFD 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) | #6DA2FF | 0.031 |
| Deuteranopia (no green cones) | #5593FB | 0.019 |
| Tritanopia (no blue cones) | #00B1BF | 0.132 |
| Achromatopsia (no color) | #9A9A9A | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599AFD
#599AFD
oklch(68.9% 0.161 258.6)
- #CA8E00
#CA8E00
oklch(68.8% 0.143 78.6)
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 #599AFD, 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 0.029
- Soft Blue #6488EA ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.052
- Periwinkle Blue #8F99FB ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.070
Use #599AFD 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.