#406D8A
Closest named color: Metallic Blue (#4F738E). oklch(51.5% 0.068 238.3), rgb(64, 109, 138).
Aa
White text reads best on this color (5.56:1).
About this color
#406D8A is a medium-dark, muted blue. In OKLCH its lightness is 51%, its chroma 0.068 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.026 away. White text reads best on it, at 5.56:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #406D8A |
| RGB | rgb(64, 109, 138) |
| HSL | hsl(204, 37%, 40%) |
| OKLCH | oklch(51.5% 0.068 238.3) |
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 #406D8A | 5.56:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #406D8A | 3.77:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #406D8A text on white | 5.56:1 | AA | Lc 77.7 | Fine for body text |
| #406D8A text on black | 3.77:1 | AA large text | Lc -24.1 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D4
oklch(80.9% 0.033 239.5)
-
Step 400
400
#83A6BE
oklch(70.8% 0.052 238.4)
-
Step 500
500
#6290AE
oklch(63.2% 0.067 237.8)
-
Step 600
600
#487999
oklch(55.5% 0.073 238.6)
-
Step 700
700 (this color)
#406D8A
oklch(51.5% 0.068 238.3)
-
Step 800
800
#30536A
oklch(42.6% 0.056 238.8)
-
Step 900
900
#2B4556
oklch(37.7% 0.043 238.1)
-
Step 950
950
#192833
oklch(26.9% 0.029 241)
#406D8A 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) | #606C8B | 0.039 |
| Deuteranopia (no green cones) | #56658A | 0.033 |
| Tritanopia (no blue cones) | #147477 | 0.053 |
| Achromatopsia (no color) | #686868 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406D8A
#406D8A
oklch(51.5% 0.068 238.3)
- #855E3F
#855E3F
oklch(51.6% 0.068 59)
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 #406D8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.026
- Muted Blue #3B719F ΔE 0.033
- Denim #3B638C ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Sea Blue #047495 ΔE 0.036
- Ocean Blue #03719C ΔE 0.040
- Slate #516572 ΔE 0.041
- Cerulean #457B9D ΔE 0.046
Use #406D8A 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.