#5F99F2
Closest named color: Cornflower Blue (#6495ED). oklch(68.3% 0.146 258.7), rgb(95, 153, 242).
Aa
Black text reads best on this color (7.32:1).
About this color
#5F99F2 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.146 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.012 away. Black text reads best on it, at 7.32:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.32:1 |
| White text | 2.86:1 |
Values
| HEX | #5F99F2 |
| RGB | rgb(95, 153, 242) |
| HSL | hsl(216, 85%, 66%) |
| OKLCH | oklch(68.3% 0.146 258.7) |
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 #5F99F2 | 2.86:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #5F99F2 | 7.32:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #5F99F2 text on white | 2.86:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #5F99F2 text on black | 7.32:1 | AAA | Lc -47.2 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400 (this color)
#5F99F2
oklch(68.3% 0.146 258.7)
-
Step 500
500
#3A86F7
oklch(63.2% 0.185 258.5)
-
Step 600
600
#116CE6
oklch(55.6% 0.201 258.6)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0849A2
oklch(42.6% 0.156 258.9)
-
Step 900
900
#123F80
oklch(37.8% 0.12 258.4)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#5F99F2 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) | #73A0F6 | 0.030 |
| Deuteranopia (no green cones) | #5F92F0 | 0.018 |
| Tritanopia (no blue cones) | #00ADBA | 0.123 |
| Achromatopsia (no color) | #989898 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F99F2
#5F99F2
oklch(68.3% 0.146 258.7)
- #C88D00
#C88D00
oklch(68.4% 0.142 78.9)
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 #5F99F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.012
- Chefchaouen Blue #4895EF ΔE 0.025
- Soft Blue #6488EA ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.057
- Periwinkle Blue #8F99FB ΔE 0.058
- Perrywinkle #8F8CE7 ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.065
Use #5F99F2 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.