#597DCD
Closest named color: Windows Blue (#3778BF). oklch(60% 0.129 264.5), rgb(89, 125, 205).
Aa
Black text reads best on this color (5.23:1).
About this color
#597DCD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.129 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.044 away. Black text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.23:1 |
| White text | 4.00:1 |
Values
| HEX | #597DCD |
| RGB | rgb(89, 125, 205) |
| HSL | hsl(221, 54%, 58%) |
| OKLCH | oklch(60% 0.129 264.5) |
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 #597DCD | 4.00:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #597DCD | 5.23:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #597DCD text on white | 4.00:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #597DCD text on black | 5.23:1 | AA | Lc -34.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ACC1EA
oklch(80.9% 0.063 263.7)
-
Step 400
400
#81A0E0
oklch(70.8% 0.1 264.1)
-
Step 500
500 (this color)
#597DCD
oklch(60% 0.129 264.5)
-
Step 600
600
#496FC5
oklch(55.7% 0.14 264.4)
-
Step 700
700
#3B5CAA
oklch(49.1% 0.131 264.8)
-
Step 800
800
#314C8A
oklch(42.8% 0.108 264.6)
-
Step 900
900
#2B406E
oklch(37.8% 0.083 264.3)
-
Step 950
950
#192540
oklch(26.8% 0.053 264.9)
#597DCD 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) | #5C85D0 | 0.022 |
| Deuteranopia (no green cones) | #4D7ACB | 0.017 |
| Tritanopia (no blue cones) | #028F9B | 0.117 |
| Achromatopsia (no color) | #7F7F7F | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #597DCD
#597DCD
oklch(60% 0.129 264.5)
- #A27900
#A27900
oklch(60% 0.123 84.7)
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 #597DCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.044
- Cool Blue #4984B8 ΔE 0.045
- Steel Blue #4682B4 ΔE 0.049
- Soft Blue #6488EA ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.052
- Water Blue #0E87CC ΔE 0.052
- Off Blue #5684AE ΔE 0.057
- Faded Blue #658CBB ΔE 0.058
Use #597DCD 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.