#6598DE
Closest named color: Cornflower Blue (#6495ED). oklch(67.4% 0.118 256.6), rgb(101, 152, 222).
Aa
Black text reads best on this color (7.09:1).
About this color
#6598DE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.118 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.026 away. Black text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.09:1 |
| White text | 2.95:1 |
Values
| HEX | #6598DE |
| RGB | rgb(101, 152, 222) |
| HSL | hsl(215, 65%, 63%) |
| OKLCH | oklch(67.4% 0.118 256.6) |
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 #6598DE | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #6598DE | 7.09:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #6598DE text on white | 2.95:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #6598DE text on black | 7.09:1 | AAA | Lc -45.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F0
oklch(80.9% 0.073 256.2)
-
Step 400
400 (this color)
#6598DE
oklch(67.4% 0.118 256.6)
-
Step 500
500
#4789E3
oklch(63% 0.152 256.8)
-
Step 600
600
#2771D1
oklch(55.6% 0.165 256.8)
-
Step 700
700
#195EB5
oklch(49.1% 0.153 256.8)
-
Step 800
800
#184D92
oklch(42.6% 0.126 256.8)
-
Step 900
900
#1A4175
oklch(37.7% 0.099 256.7)
-
Step 950
950
#102644
oklch(26.8% 0.063 256.8)
#6598DE 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) | #7C9CE1 | 0.030 |
| Deuteranopia (no green cones) | #6D91DD | 0.019 |
| Tritanopia (no blue cones) | #17A8B1 | 0.105 |
| Achromatopsia (no color) | #969696 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6598DE
#6598DE
oklch(67.4% 0.118 256.6)
- #BF8C36
#BF8C36
oklch(67.4% 0.118 77)
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 #6598DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.046
- Soft Blue #6488EA ΔE 0.050
- Faded Blue #658CBB ΔE 0.056
- Perrywinkle #8F8CE7 ΔE 0.061
- Periwinkle Blue #8F99FB ΔE 0.069
- Greyblue #77A1B5 ΔE 0.075
Use #6598DE 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.