#6598E7
Closest named color: Cornflower Blue (#6495ED). oklch(67.8% 0.13 258.9), rgb(101, 152, 231).
Aa
Black text reads best on this color (7.19:1).
About this color
#6598E7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.130 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.013 away. Black text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.19:1 |
| White text | 2.91:1 |
Values
| HEX | #6598E7 |
| RGB | rgb(101, 152, 231) |
| HSL | hsl(216, 73%, 65%) |
| OKLCH | oklch(67.8% 0.13 258.9) |
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 #6598E7 | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #6598E7 | 7.19:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #6598E7 text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #6598E7 text on black | 7.19:1 | AAA | Lc -46.4 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF8
oklch(88.6% 0.045 258.8)
-
Step 300
300
#A1C2F5
oklch(80.8% 0.081 259)
-
Step 400
400 (this color)
#6598E7
oklch(67.8% 0.13 258.9)
-
Step 500
500
#4687EC
oklch(63.1% 0.166 259)
-
Step 600
600
#266EDA
oklch(55.5% 0.18 258.9)
-
Step 700
700
#185BBD
oklch(49% 0.168 258.9)
-
Step 800
800
#174B99
oklch(42.6% 0.139 259)
-
Step 900
900
#1A407A
oklch(37.8% 0.108 258.8)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#6598E7 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) | #789EEA | 0.028 |
| Deuteranopia (no green cones) | #6792E5 | 0.016 |
| Tritanopia (no blue cones) | #00AAB5 | 0.115 |
| Achromatopsia (no color) | #979797 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6598E7
#6598E7
oklch(67.8% 0.13 258.9)
- #C28D24
#C28D24
oklch(67.8% 0.13 79.2)
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 #6598E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.013
- Chefchaouen Blue #4895EF ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.044
- Soft Blue #6488EA ΔE 0.044
- Perrywinkle #8F8CE7 ΔE 0.057
- Periwinkle Blue #8F99FB ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.067
- Faded Blue #658CBB ΔE 0.067
Use #6598E7 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.