#556B97
Closest named color: Dull Blue (#49759C). oklch(52.9% 0.075 263.6), rgb(85, 107, 151).
Aa
White text reads best on this color (5.33:1).
About this color
#556B97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.075 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.029 away. White text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #556B97 |
| RGB | rgb(85, 107, 151) |
| HSL | hsl(220, 28%, 46%) |
| OKLCH | oklch(52.9% 0.075 263.6) |
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 #556B97 | 5.33:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #556B97 | 3.93:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #556B97 text on white | 5.33:1 | AA | Lc 76.5 | Fine for body text |
| #556B97 text on black | 3.93:1 | AA large text | Lc -25.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B6C1D7
oklch(80.9% 0.033 264.4)
-
Step 400
400
#8FA1C3
oklch(70.7% 0.054 263.1)
-
Step 500
500
#7489B4
oklch(63% 0.07 264.3)
-
Step 600
600 (this color)
#556B97
oklch(52.9% 0.075 263.6)
-
Step 700
700
#4C6088
oklch(49% 0.069 263.6)
-
Step 800
800
#3F4F6F
oklch(42.8% 0.057 263.7)
-
Step 900
900
#35415A
oklch(37.6% 0.046 264.5)
-
Step 950
950
#1F2635
oklch(26.9% 0.03 265.1)
#556B97 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) | #5B6E99 | 0.013 |
| Deuteranopia (no green cones) | #546896 | 0.009 |
| Tritanopia (no blue cones) | #3E747A | 0.067 |
| Achromatopsia (no color) | #6B6B6B | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556B97
#556B97
oklch(52.9% 0.075 263.6)
- #806836
#806836
oklch(53% 0.075 84.1)
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 #556B97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.029
- Muted Blue #3B719F ΔE 0.031
- Metallic Blue #4F738E ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.037
- French Blue #436BAD ΔE 0.040
- Dusky Blue #475F94 ΔE 0.041
- Denim #3B638C ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
Use #556B97 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.