#6598FB
Closest named color: Cornflower Blue (#6495ED). oklch(68.9% 0.156 262.4), rgb(101, 152, 251).
Aa
Black text reads best on this color (7.43:1).
About this color
#6598FB is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.156 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.021 away. Black text reads best on it, at 7.43:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.43:1 |
| White text | 2.82:1 |
Values
| HEX | #6598FB |
| RGB | rgb(101, 152, 251) |
| HSL | hsl(220, 95%, 69%) |
| OKLCH | oklch(68.9% 0.156 262.4) |
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 #6598FB | 2.82:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #6598FB | 7.43:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #6598FB text on white | 2.82:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #6598FB text on black | 7.43:1 | AAA | Lc -47.8 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C6DAFE
oklch(88.5% 0.054 262.2)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400 (this color)
#6598FB
oklch(68.9% 0.156 262.4)
-
Step 500
500
#4381FF
oklch(63% 0.199 262.5)
-
Step 600
600
#2466EF
oklch(55.5% 0.217 262.4)
-
Step 700
700
#1854D0
oklch(49.1% 0.201 262.4)
-
Step 800
800
#1646A8
oklch(42.8% 0.166 262.3)
-
Step 900
900
#183C85
oklch(37.7% 0.13 262.3)
-
Step 950
950
#0F244E
oklch(27% 0.082 262.4)
#6598FB 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) | #6DA1FF | 0.026 |
| Deuteranopia (no green cones) | #5893F9 | 0.020 |
| Tritanopia (no blue cones) | #00AEBD | 0.135 |
| Achromatopsia (no color) | #9A9A9A | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6598FB
#6598FB
oklch(68.9% 0.156 262.4)
- #C69100
#C69100
oklch(68.9% 0.142 82.4)
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 #6598FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.034
- Soft Blue #6488EA ΔE 0.045
- Periwinkle Blue #8F99FB ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.054
- Lavender Blue #8B88F8 ΔE 0.056
- Dodger Blue #1E90FF ΔE 0.057
- Perrywinkle #8F8CE7 ΔE 0.059
Use #6598FB 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.