#597598
Closest named color: Stormy Blue (#507B9C). oklch(55.5% 0.064 254.3), rgb(89, 117, 152).
Aa
White text reads best on this color (4.74:1).
About this color
#597598 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.064 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.018 away. White text reads best on it, at 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.42:1 |
| White text | 4.74:1 |
Values
| HEX | #597598 |
| RGB | rgb(89, 117, 152) |
| HSL | hsl(213, 26%, 47%) |
| OKLCH | oklch(55.5% 0.064 254.3) |
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 #597598 | 4.74:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #597598 | 4.42:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #597598 text on white | 4.74:1 | AA | Lc 72.9 | Content text, not long reading |
| #597598 text on black | 4.42:1 | AA large text | Lc -28.8 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D3
oklch(80.9% 0.029 253.3)
-
Step 400
400
#8DA3BD
oklch(70.7% 0.045 252.7)
-
Step 500
500
#718CAD
oklch(63.2% 0.059 253.7)
-
Step 600
600 (this color)
#597598
oklch(55.5% 0.064 254.3)
-
Step 700
700
#496382
oklch(49.2% 0.059 253.3)
-
Step 800
800
#3C506A
oklch(42.6% 0.05 255.2)
-
Step 900
900
#344356
oklch(37.8% 0.038 254.6)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#597598 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) | #68769A | 0.021 |
| Deuteranopia (no green cones) | #607097 | 0.016 |
| Tritanopia (no blue cones) | #437D81 | 0.056 |
| Achromatopsia (no color) | #737373 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #597598
#597598
oklch(55.5% 0.064 254.3)
- #896E48
#896E48
oklch(55.5% 0.064 75.3)
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 #597598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.018
- Dull Blue #49759C ΔE 0.019
- Metallic Blue #4F738E ΔE 0.021
- Cerulean #457B9D ΔE 0.025
- Grey Blue #647D8E ΔE 0.036
- Muted Blue #3B719F ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.041
- Off Blue #5684AE ΔE 0.047
Use #597598 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.