#537587
Closest named color: Metallic Blue (#4F738E). oklch(54.3% 0.048 231.9), rgb(83, 117, 135).
Aa
White text reads best on this color (4.92:1).
About this color
#537587 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.048 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.015 away. White text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #537587 |
| RGB | rgb(83, 117, 135) |
| HSL | hsl(201, 24%, 43%) |
| OKLCH | oklch(54.3% 0.048 231.9) |
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 #537587 | 4.92:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #537587 | 4.26:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #537587 text on white | 4.92:1 | AA | Lc 74.1 | Content text, not long reading |
| #537587 text on black | 4.26:1 | AA large text | Lc -27.6 | 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B3C3CC
oklch(80.8% 0.022 232.2)
-
Step 400
400
#8CA5B3
oklch(70.7% 0.035 232.5)
-
Step 500
500
#6F8FA0
oklch(63.2% 0.044 231.5)
-
Step 600
600 (this color)
#537587
oklch(54.3% 0.048 231.9)
-
Step 700
700
#476676
oklch(49.3% 0.044 231.3)
-
Step 800
800
#3A5360
oklch(42.7% 0.037 231.4)
-
Step 900
900
#32454E
oklch(37.8% 0.029 228.7)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#537587 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) | #6C7488 | 0.033 |
| Deuteranopia (no green cones) | #656E87 | 0.030 |
| Tritanopia (no blue cones) | #407A7B | 0.035 |
| Achromatopsia (no color) | #707070 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537587
#537587
oklch(54.3% 0.048 231.9)
- #876856
#876856
oklch(54.3% 0.048 51.5)
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 #537587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.015
- Stormy Blue #507B9C ΔE 0.033
- Grey Blue #647D8E ΔE 0.034
- Dull Blue #49759C ΔE 0.034
- Cerulean #457B9D ΔE 0.035
- Battleship Gray #6C757D ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.040
- Muted Blue #3B719F ΔE 0.049
Use #537587 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.