#599CF2
Closest named color: Cornflower Blue (#6495ED). oklch(68.7% 0.145 255.5), rgb(89, 156, 242).
Aa
Black text reads best on this color (7.46:1).
About this color
#599CF2 is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.145 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.020 away. Black text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #599CF2 |
| RGB | rgb(89, 156, 242) |
| HSL | hsl(214, 85%, 65%) |
| OKLCH | oklch(68.7% 0.145 255.5) |
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 #599CF2 | 2.81:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #599CF2 | 7.46:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #599CF2 text on white | 2.81:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #599CF2 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFB
oklch(88.5% 0.051 256.7)
-
Step 300
300
#9AC4FB
oklch(81% 0.09 255.4)
-
Step 400
400 (this color)
#599CF2
oklch(68.7% 0.145 255.5)
-
Step 500
500
#2B88F6
oklch(63.1% 0.185 255.5)
-
Step 600
600
#0070DD
oklch(55.6% 0.187 255.6)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800
#004D9B
oklch(42.8% 0.143 255.4)
-
Step 900
900
#06407F
oklch(37.7% 0.12 255.4)
-
Step 950
950
#08264B
oklch(27% 0.077 255.8)
#599CF2 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) | #77A2F6 | 0.037 |
| Deuteranopia (no green cones) | #6193F0 | 0.023 |
| Tritanopia (no blue cones) | #00B0BC | 0.118 |
| Achromatopsia (no color) | #9A9A9A | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599CF2
#599CF2
oklch(68.7% 0.145 255.5)
- #CD8B00
#CD8B00
oklch(68.6% 0.145 75.3)
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 #599CF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.020
- Chefchaouen Blue #4895EF ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.047
- Soft Blue #6488EA ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.058
- Periwinkle Blue #8F99FB ΔE 0.063
- Perrywinkle #8F8CE7 ΔE 0.069
- Lavender Blue #8B88F8 ΔE 0.074
Use #599CF2 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.