#6597E8
Closest named color: Cornflower Blue (#6495ED). oklch(67.7% 0.132 259.7), rgb(101, 151, 232).
Aa
Black text reads best on this color (7.14:1).
About this color
#6597E8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.132 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.010 away. Black text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.14:1 |
| White text | 2.93:1 |
Values
| HEX | #6597E8 |
| RGB | rgb(101, 151, 232) |
| HSL | hsl(217, 74%, 65%) |
| OKLCH | oklch(67.7% 0.132 259.7) |
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 #6597E8 | 2.93:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #6597E8 | 7.14:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #6597E8 text on white | 2.93:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #6597E8 text on black | 7.14:1 | AAA | Lc -46.1 | 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
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A1C2F6
oklch(80.8% 0.082 259.4)
-
Step 400
400 (this color)
#6597E8
oklch(67.7% 0.132 259.7)
-
Step 500
500
#4786EE
oklch(63% 0.17 259.9)
-
Step 600
600
#286DDC
oklch(55.5% 0.184 259.8)
-
Step 700
700
#1A5BBF
oklch(49.2% 0.17 259.5)
-
Step 800
800
#184B9B
oklch(42.8% 0.141 259.5)
-
Step 900
900
#1A3F7B
oklch(37.6% 0.111 259.7)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#6597E8 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) | #769DEB | 0.027 |
| Deuteranopia (no green cones) | #6591E6 | 0.016 |
| Tritanopia (no blue cones) | #00A9B5 | 0.117 |
| Achromatopsia (no color) | #979797 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6597E8
#6597E8
oklch(67.7% 0.132 259.7)
- #C28C1E
#C28C1E
oklch(67.6% 0.132 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 #6597E8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.010
- Chefchaouen Blue #4895EF ΔE 0.029
- Soft Blue #6488EA ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.042
- Perrywinkle #8F8CE7 ΔE 0.056
- Periwinkle Blue #8F99FB ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.065
- Dodger Blue #1E90FF ΔE 0.065
Use #6597E8 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.