#597181
Closest named color: Metallic Blue (#4F738E). oklch(53.5% 0.038 237.6), rgb(89, 113, 129).
Aa
White text reads best on this color (5.11:1).
About this color
#597181 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.038 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.022 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #597181 |
| RGB | rgb(89, 113, 129) |
| HSL | hsl(204, 18%, 43%) |
| OKLCH | oklch(53.5% 0.038 237.6) |
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 #597181 | 5.11:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #597181 | 4.10:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #597181 text on white | 5.11:1 | AA | Lc 75.3 | Fine for body text |
| #597181 text on black | 4.10:1 | AA large text | Lc -26.4 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B7C2CA
oklch(80.8% 0.017 239.2)
-
Step 400
400
#91A4B0
oklch(70.8% 0.028 235.5)
-
Step 500
500
#768D9C
oklch(63.1% 0.035 236.7)
-
Step 600
600 (this color)
#597181
oklch(53.5% 0.038 237.6)
-
Step 700
700
#4E6473
oklch(49.1% 0.036 238.3)
-
Step 800
800
#40525D
oklch(42.8% 0.029 235.2)
-
Step 900
900
#36444C
oklch(37.8% 0.023 233.2)
-
Step 950
950
#20282D
oklch(27.1% 0.015 235.5)
#597181 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) | #6A7082 | 0.024 |
| Deuteranopia (no green cones) | #646C81 | 0.020 |
| Tritanopia (no blue cones) | #4D7576 | 0.029 |
| Achromatopsia (no color) | #6E6E6E | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #597181
#597181
oklch(53.5% 0.038 237.6)
- #7F6858
#7F6858
oklch(53.5% 0.038 56.6)
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 #597181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.022
- Battleship Gray #6C757D ΔE 0.031
- Dim Gray #696969 ΔE 0.041
- Slate #516572 ΔE 0.041
- Grey Blue #647D8E ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.042
- Dull Blue #49759C ΔE 0.043
- Stormy Blue #507B9C ΔE 0.044
Use #597181 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.