#537D94
Closest named color: Stormy Blue (#507B9C). oklch(56.8% 0.059 233.2), rgb(83, 125, 148).
Aa
Black text reads best on this color (4.72:1).
About this color
#537D94 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.059 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.016 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #537D94 |
| RGB | rgb(83, 125, 148) |
| HSL | hsl(201, 28%, 45%) |
| OKLCH | oklch(56.8% 0.059 233.2) |
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 #537D94 | 4.44:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #537D94 | 4.72:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #537D94 text on white | 4.44:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #537D94 text on black | 4.72:1 | AA | Lc -30.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE1
oklch(88.5% 0.015 231.2)
-
Step 300
300
#B1C4CF
oklch(80.9% 0.026 233.1)
-
Step 400
400
#87A6B7
oklch(70.8% 0.042 232.1)
-
Step 500
500
#6990A5
oklch(63.2% 0.053 232.2)
-
Step 600
600 (this color)
#537D94
oklch(56.8% 0.059 233.2)
-
Step 700
700
#40667B
oklch(49.1% 0.055 233.7)
-
Step 800
800
#355364
oklch(42.6% 0.045 234.2)
-
Step 900
900
#2F4551
oklch(37.7% 0.034 232.7)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#537D94 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) | #727C95 | 0.039 |
| Deuteranopia (no green cones) | #697494 | 0.036 |
| Tritanopia (no blue cones) | #388384 | 0.044 |
| Achromatopsia (no color) | #787878 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537D94
#537D94
oklch(56.8% 0.059 233.2)
- #936E56
#936E56
oklch(56.9% 0.059 54.2)
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 #537D94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.016
- Grey Blue #647D8E ΔE 0.022
- Cerulean #457B9D ΔE 0.022
- Metallic Blue #4F738E ΔE 0.030
- Dull Blue #49759C ΔE 0.033
- Battleship Grey #6B7C85 ΔE 0.035
- Slate Gray #708090 ΔE 0.039
- Off Blue #5684AE ΔE 0.041
Use #537D94 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.