#53729D
Closest named color: Dull Blue (#49759C). oklch(54.6% 0.077 256.7), rgb(83, 114, 157).
Aa
White text reads best on this color (4.92:1).
About this color
#53729D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.077 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.014 away. White text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #53729D |
| RGB | rgb(83, 114, 157) |
| HSL | hsl(215, 31%, 47%) |
| OKLCH | oklch(54.6% 0.077 256.7) |
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 #53729D | 4.92:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #53729D | 4.26:1 | AA large text | Lc 30.0 | Non-text elements, placeholder text |
| #53729D text on white | 4.92:1 | AA | Lc 74.1 | Content text, not long reading |
| #53729D 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B3C2D7
oklch(80.9% 0.034 256.8)
-
Step 400
400
#8BA2C3
oklch(70.6% 0.055 257.4)
-
Step 500
500
#6E8BB4
oklch(63% 0.07 257.1)
-
Step 600
600 (this color)
#53729D
oklch(54.6% 0.077 256.7)
-
Step 700
700
#466289
oklch(49.1% 0.071 256.8)
-
Step 800
800
#3A506F
oklch(42.7% 0.059 257)
-
Step 900
900
#32435A
oklch(37.9% 0.045 256.1)
-
Step 950
950
#1D2735
oklch(27% 0.03 256.9)
#53729D 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) | #62749F | 0.021 |
| Deuteranopia (no green cones) | #596D9C | 0.015 |
| Tritanopia (no blue cones) | #357B81 | 0.067 |
| Achromatopsia (no color) | #707070 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53729D
#53729D
oklch(54.6% 0.077 256.7)
- #8A6A3A
#8A6A3A
oklch(54.6% 0.077 76.1)
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 #53729D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.014
- Metallic Blue #4F738E ΔE 0.026
- Muted Blue #3B719F ΔE 0.026
- Stormy Blue #507B9C ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.028
- Cerulean #457B9D ΔE 0.029
- French Blue #436BAD ΔE 0.041
- Steel Blue #4682B4 ΔE 0.050
Use #53729D 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.