#537391
Closest named color: Metallic Blue (#4F738E). oklch(54.3% 0.06 247.4), rgb(83, 115, 145).
Aa
White text reads best on this color (4.96:1).
About this color
#537391 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.060 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.007 away. White text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #537391 |
| RGB | rgb(83, 115, 145) |
| HSL | hsl(209, 27%, 45%) |
| OKLCH | oklch(54.3% 0.06 247.4) |
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 #537391 | 4.96:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #537391 | 4.22:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #537391 text on white | 4.96:1 | AA | Lc 74.3 | Content text, not long reading |
| #537391 text on black | 4.22:1 | AA large text | Lc -27.4 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8CA4BB
oklch(70.8% 0.043 247.3)
-
Step 500
500
#6F8DAA
oklch(63.1% 0.056 247.8)
-
Step 600
600 (this color)
#537391
oklch(54.3% 0.06 247.4)
-
Step 700
700
#47647F
oklch(49.2% 0.055 247.2)
-
Step 800
800
#3A5167
oklch(42.5% 0.046 247.9)
-
Step 900
900
#324454
oklch(37.8% 0.036 245.8)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#537391 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) | #677392 | 0.026 |
| Deuteranopia (no green cones) | #5F6D90 | 0.022 |
| Tritanopia (no blue cones) | #3C7A7D | 0.050 |
| Achromatopsia (no color) | #707070 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537391
#537391
oklch(54.3% 0.06 247.4)
- #876949
#876949
oklch(54.3% 0.06 67.8)
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 #537391, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.007
- Dull Blue #49759C ΔE 0.019
- Stormy Blue #507B9C ΔE 0.025
- Cerulean #457B9D ΔE 0.027
- Muted Blue #3B719F ΔE 0.035
- Grey Blue #647D8E ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.042
- Battleship Gray #6C757D ΔE 0.046
Use #537391 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.