#556C97
Closest named color: Dull Blue (#49759C). oklch(53.1% 0.073 262.5), rgb(85, 108, 151).
Aa
White text reads best on this color (5.27:1).
About this color
#556C97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.073 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.027 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 3.97:1 |
| White text | 5.27:1 |
Values
| HEX | #556C97 |
| RGB | rgb(85, 108, 151) |
| HSL | hsl(219, 28%, 46%) |
| OKLCH | oklch(53.1% 0.073 262.5) |
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 #556C97 | 5.27:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #556C97 | 3.97:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #556C97 text on white | 5.27:1 | AA | Lc 76.2 | Fine for body text |
| #556C97 text on black | 3.97:1 | AA large text | Lc -25.6 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B5C1D7
oklch(80.9% 0.034 262.7)
-
Step 400
400
#8FA1C2
oklch(70.6% 0.053 262.5)
-
Step 500
500
#738AB3
oklch(63.1% 0.068 261.8)
-
Step 600
600 (this color)
#556C97
oklch(53.1% 0.073 262.5)
-
Step 700
700
#4C6188
oklch(49.2% 0.068 262.4)
-
Step 800
800
#3E4F6E
oklch(42.7% 0.056 262.1)
-
Step 900
900
#354259
oklch(37.8% 0.043 261.6)
-
Step 950
950
#1F2734
oklch(27.1% 0.027 260)
#556C97 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) | #5D6F99 | 0.015 |
| Deuteranopia (no green cones) | #556996 | 0.009 |
| Tritanopia (no blue cones) | #3D757B | 0.066 |
| Achromatopsia (no color) | #6C6C6C | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556C97
#556C97
oklch(53.1% 0.073 262.5)
- #816838
#816838
oklch(53.1% 0.073 82.4)
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 #556C97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.029
- Muted Blue #3B719F ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.036
- French Blue #436BAD ΔE 0.041
- Stormy Blue #507B9C ΔE 0.042
- Cerulean #457B9D ΔE 0.043
- Dusky Blue #475F94 ΔE 0.044
Use #556C97 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.