#53739D
Closest named color: Dull Blue (#49759C). oklch(54.9% 0.076 255.5), rgb(83, 115, 157).
Aa
White text reads best on this color (4.87:1).
About this color
#53739D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.076 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.012 away. White text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #53739D |
| RGB | rgb(83, 115, 157) |
| HSL | hsl(214, 31%, 47%) |
| OKLCH | oklch(54.9% 0.076 255.5) |
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 #53739D | 4.87:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #53739D | 4.30:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #53739D text on white | 4.87:1 | AA | Lc 73.7 | Content text, not long reading |
| #53739D text on black | 4.30:1 | AA large text | Lc -28.0 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B2C2D7
oklch(80.9% 0.035 255.2)
-
Step 400
400
#8AA3C3
oklch(70.8% 0.055 254.7)
-
Step 500
500
#6D8CB3
oklch(63.2% 0.069 254.5)
-
Step 600
600 (this color)
#53739D
oklch(54.9% 0.076 255.5)
-
Step 700
700
#456288
oklch(49% 0.07 255.5)
-
Step 800
800
#39506F
oklch(42.6% 0.059 256.1)
-
Step 900
900
#31435A
oklch(37.8% 0.046 254.9)
-
Step 950
950
#1D2734
oklch(26.9% 0.028 255.2)
#53739D 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) | #63759F | 0.022 |
| Deuteranopia (no green cones) | #5A6E9C | 0.016 |
| Tritanopia (no blue cones) | #357C82 | 0.065 |
| Achromatopsia (no color) | #717171 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53739D
#53739D
oklch(54.9% 0.076 255.5)
- #8B6B3C
#8B6B3C
oklch(54.9% 0.076 75.7)
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 #53739D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.012
- Stormy Blue #507B9C ΔE 0.024
- Metallic Blue #4F738E ΔE 0.025
- Cerulean #457B9D ΔE 0.026
- Muted Blue #3B719F ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.028
- French Blue #436BAD ΔE 0.043
- Steel Blue #4682B4 ΔE 0.048
Use #53739D 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.