#597FDD
Closest named color: Soft Blue (#6488EA). oklch(61.4% 0.149 265.6), rgb(89, 127, 221).
Aa
Black text reads best on this color (5.50:1).
About this color
#597FDD is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.149 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.033 away. Black text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #597FDD |
| RGB | rgb(89, 127, 221) |
| HSL | hsl(223, 66%, 61%) |
| OKLCH | oklch(61.4% 0.149 265.6) |
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 #597FDD | 3.81:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #597FDD | 5.50:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #597FDD text on white | 3.81:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #597FDD text on black | 5.50:1 | AA | Lc -36.2 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#AAC0F1
oklch(80.8% 0.074 265.9)
-
Step 400
400
#7E9EEA
oklch(70.7% 0.118 266.1)
-
Step 500
500 (this color)
#597FDD
oklch(61.4% 0.149 265.6)
-
Step 600
600
#456CD1
oklch(55.6% 0.162 265.5)
-
Step 700
700
#3759B5
oklch(49% 0.151 265.8)
-
Step 800
800
#2E4A92
oklch(42.8% 0.123 265.5)
-
Step 900
900
#293E75
oklch(37.7% 0.098 266.1)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#597FDD 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) | #5589E1 | 0.026 |
| Deuteranopia (no green cones) | #427DDB | 0.025 |
| Tritanopia (no blue cones) | #0094A3 | 0.129 |
| Achromatopsia (no color) | #838383 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #597FDD
#597FDD
oklch(61.4% 0.149 265.6)
- #A67D00
#A67D00
oklch(61.3% 0.126 85.4)
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 #597FDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.040
- Cornflower #6A79F7 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.059
- Water Blue #0E87CC ΔE 0.060
- Windows Blue #3778BF ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.062
- Cool Blue #4984B8 ΔE 0.065
Use #597FDD 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.