#597EC0
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.11 261.4), rgb(89, 126, 192).
Aa
Black text reads best on this color (5.17:1).
About this color
#597EC0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.110 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.028 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.17:1 |
| White text | 4.06:1 |
Values
| HEX | #597EC0 |
| RGB | rgb(89, 126, 192) |
| HSL | hsl(218, 45%, 55%) |
| OKLCH | oklch(59.5% 0.11 261.4) |
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 #597EC0 | 4.06:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #597EC0 | 5.17:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #597EC0 text on white | 4.06:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #597EC0 text on black | 5.17:1 | AA | Lc -34.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#AEC2E4
oklch(81% 0.053 261)
-
Step 400
400
#83A1D7
oklch(70.7% 0.086 261.9)
-
Step 500
500 (this color)
#597EC0
oklch(59.5% 0.11 261.4)
-
Step 600
600
#4A72B9
oklch(55.6% 0.12 261.1)
-
Step 700
700
#3C5F9F
oklch(49.1% 0.111 261.5)
-
Step 800
800
#314E81
oklch(42.7% 0.092 261)
-
Step 900
900
#2C4168
oklch(37.7% 0.072 262)
-
Step 950
950
#1A263D
oklch(27% 0.046 262.7)
#597EC0 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) | #6483C3 | 0.020 |
| Deuteranopia (no green cones) | #577ABF | 0.012 |
| Tritanopia (no blue cones) | #218C96 | 0.098 |
| Achromatopsia (no color) | #7E7E7E | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #597EC0
#597EC0
oklch(59.5% 0.11 261.4)
- #A07722
#A07722
oklch(59.5% 0.11 81.2)
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 #597EC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.031
- Off Blue #5684AE ΔE 0.037
- Windows Blue #3778BF ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.042
- Faded Blue #658CBB ΔE 0.046
- Water Blue #0E87CC ΔE 0.051
- Stormy Blue #507B9C ΔE 0.057
Use #597EC0 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.