#537B96
Closest named color: Stormy Blue (#507B9C). oklch(56.4% 0.061 238.8), rgb(83, 123, 150).
Aa
Black text reads best on this color (4.64:1).
About this color
#537B96 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.061 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.010 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #537B96 |
| RGB | rgb(83, 123, 150) |
| HSL | hsl(204, 29%, 46%) |
| OKLCH | oklch(56.4% 0.061 238.8) |
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 #537B96 | 4.52:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #537B96 | 4.64:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #537B96 text on white | 4.52:1 | AA | Lc 71.4 | Content text, not long reading |
| #537B96 text on black | 4.64:1 | AA | Lc -30.3 | 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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B1C4D1
oklch(81% 0.028 237.7)
-
Step 400
400
#88A5B9
oklch(70.7% 0.044 238.4)
-
Step 500
500
#6A8FA8
oklch(63.2% 0.056 238.3)
-
Step 600
600 (this color)
#537B96
oklch(56.4% 0.061 238.8)
-
Step 700
700
#41657E
oklch(49% 0.058 239.8)
-
Step 800
800
#365366
oklch(42.7% 0.047 238.1)
-
Step 900
900
#2F4553
oklch(37.8% 0.036 236.9)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#537B96 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) | #6F7A97 | 0.036 |
| Deuteranopia (no green cones) | #667396 | 0.031 |
| Tritanopia (no blue cones) | #388284 | 0.048 |
| Achromatopsia (no color) | #767676 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537B96
#537B96
oklch(56.4% 0.061 238.8)
- #916D51
#916D51
oklch(56.4% 0.061 59)
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 #537B96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.010
- Cerulean #457B9D ΔE 0.017
- Metallic Blue #4F738E ΔE 0.025
- Grey Blue #647D8E ΔE 0.025
- Dull Blue #49759C ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.039
- Off Blue #5684AE ΔE 0.041
- Slate Gray #708090 ΔE 0.042
Use #537B96 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.