#556E9F
Closest named color: Dull Blue (#49759C). oklch(54% 0.083 263.2), rgb(85, 110, 159).
Aa
White text reads best on this color (5.10:1).
About this color
#556E9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.083 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.025 away. White text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #556E9F |
| RGB | rgb(85, 110, 159) |
| HSL | hsl(220, 30%, 48%) |
| OKLCH | oklch(54% 0.083 263.2) |
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 #556E9F | 5.10:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #556E9F | 4.11:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #556E9F text on white | 5.10:1 | AA | Lc 75.1 | Fine for body text |
| #556E9F text on black | 4.11:1 | AA large text | Lc -26.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E7
oklch(88.4% 0.021 264.5)
-
Step 300
300
#B4C1D9
oklch(80.9% 0.037 262.8)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#7189B8
oklch(63% 0.077 263.4)
-
Step 600
600 (this color)
#556E9F
oklch(54% 0.083 263.2)
-
Step 700
700
#49608D
oklch(49.1% 0.078 263.1)
-
Step 800
800
#3C4F72
oklch(42.8% 0.063 262.1)
-
Step 900
900
#34415C
oklch(37.6% 0.05 264.3)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#556E9F 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) | #5C72A1 | 0.015 |
| Deuteranopia (no green cones) | #546B9E | 0.009 |
| Tritanopia (no blue cones) | #38787F | 0.074 |
| Achromatopsia (no color) | #6E6E6E | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556E9F
#556E9F
oklch(54% 0.083 263.2)
- #866A31
#866A31
oklch(54% 0.083 83.1)
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 #556E9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.025
- Muted Blue #3B719F ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.029
- French Blue #436BAD ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.039
- Cerulean #457B9D ΔE 0.041
- Dusky Blue #475F94 ΔE 0.049
Use #556E9F 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.