#537F97
Closest named color: Stormy Blue (#507B9C). oklch(57.4% 0.061 233.2), rgb(83, 127, 151).
Aa
Black text reads best on this color (4.85:1).
About this color
#537F97 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.061 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.017 away. Black text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #537F97 |
| RGB | rgb(83, 127, 151) |
| HSL | hsl(201, 29%, 46%) |
| OKLCH | oklch(57.4% 0.061 233.2) |
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 #537F97 | 4.32:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #537F97 | 4.85:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #537F97 text on white | 4.32:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #537F97 text on black | 4.85:1 | AA | Lc -31.8 | 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
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B0C4D0
oklch(80.9% 0.028 234.1)
-
Step 400
400
#86A6B8
oklch(70.7% 0.044 232.8)
-
Step 500
500
#6790A6
oklch(63.1% 0.056 232.2)
-
Step 600
600 (this color)
#537F97
oklch(57.4% 0.061 233.2)
-
Step 700
700
#3E667C
oklch(49% 0.057 233.7)
-
Step 800
800
#345465
oklch(42.8% 0.047 232.6)
-
Step 900
900
#2E4552
oklch(37.7% 0.036 233.8)
-
Step 950
950
#1B2930
oklch(27.1% 0.023 230.3)
#537F97 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) | #747E98 | 0.042 |
| Deuteranopia (no green cones) | #6A7697 | 0.036 |
| Tritanopia (no blue cones) | #368587 | 0.045 |
| Achromatopsia (no color) | #797979 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #537F97
#537F97
oklch(57.4% 0.061 233.2)
- #966F57
#966F57
oklch(57.5% 0.061 52.8)
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 #537F97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.017
- Grey Blue #647D8E ΔE 0.022
- Cerulean #457B9D ΔE 0.023
- Dull Blue #49759C ΔE 0.036
- Metallic Blue #4F738E ΔE 0.036
- Off Blue #5684AE ΔE 0.036
- Battleship Grey #6B7C85 ΔE 0.037
- Slate Gray #708090 ΔE 0.037
Use #537F97 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.