#6598CA
Closest named color: Faded Blue (#658CBB). oklch(66.4% 0.093 248.9), rgb(101, 152, 202).
Aa
Black text reads best on this color (6.89:1).
About this color
#6598CA is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.093 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.036 away. Black text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.89:1 |
| White text | 3.04:1 |
Values
| HEX | #6598CA |
| RGB | rgb(101, 152, 202) |
| HSL | hsl(210, 49%, 59%) |
| OKLCH | oklch(66.4% 0.093 248.9) |
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 #6598CA | 3.04:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #6598CA | 6.89:1 | AA | Lc 46.9 | Large or bold text, headings |
| #6598CA text on white | 3.04:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #6598CA text on black | 6.89:1 | AA | Lc -44.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DD
oklch(81% 0.045 248.4)
-
Step 400
400
#7DA5CC
oklch(70.7% 0.072 248.2)
-
Step 500
500 (this color)
#6598CA
oklch(66.4% 0.093 248.9)
-
Step 600
600
#4077AC
oklch(55.6% 0.102 249.3)
-
Step 700
700
#326493
oklch(49.1% 0.093 249)
-
Step 800
800
#2A5278
oklch(42.8% 0.078 249)
-
Step 900
900
#274460
oklch(37.7% 0.06 248.9)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#6598CA 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) | #8499CC | 0.037 |
| Deuteranopia (no green cones) | #778FC9 | 0.030 |
| Tritanopia (no blue cones) | #33A4A9 | 0.080 |
| Achromatopsia (no color) | #949494 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6598CA
#6598CA
oklch(66.4% 0.093 248.9)
- #B98952
#B98952
oklch(66.5% 0.093 68.8)
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 #6598CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.036
- Greyblue #77A1B5 ΔE 0.051
- Silver Lake Blue #778DA9 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.056
- Blue Grey #758DA3 ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.062
- Cool Gray #8D99AE ΔE 0.062
Use #6598CA 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.