#406C99
Closest named color: Muted Blue (#3B719F). oklch(52% 0.087 250.3), rgb(64, 108, 153).
Aa
White text reads best on this color (5.49:1).
About this color
#406C99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.087 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.015 away. White text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #406C99 |
| RGB | rgb(64, 108, 153) |
| HSL | hsl(210, 41%, 43%) |
| OKLCH | oklch(52% 0.087 250.3) |
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 #406C99 | 5.49:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #406C99 | 3.82:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #406C99 text on white | 5.49:1 | AA | Lc 77.3 | Fine for body text |
| #406C99 text on black | 3.82:1 | AA large text | Lc -24.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#81A4CA
oklch(70.7% 0.068 250.9)
-
Step 500
500
#618DBC
oklch(63.1% 0.086 250.9)
-
Step 600
600
#4777A8
oklch(55.7% 0.093 250.3)
-
Step 700
700 (this color)
#406C99
oklch(52% 0.087 250.3)
-
Step 800
800
#2F5175
oklch(42.6% 0.072 251.1)
-
Step 900
900
#2A445E
oklch(37.8% 0.055 249.5)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#406C99 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) | #596E9B | 0.031 |
| Deuteranopia (no green cones) | #4E6598 | 0.024 |
| Tritanopia (no blue cones) | #00767C | 0.073 |
| Achromatopsia (no color) | #696969 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406C99
#406C99
oklch(52% 0.087 250.3)
- #885F2B
#885F2B
oklch(51.8% 0.087 70.2)
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 #406C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.015
- Flat Blue #3C73A8 ΔE 0.027
- Dull Blue #49759C ΔE 0.029
- Denim #3B638C ΔE 0.032
- French Blue #436BAD ΔE 0.033
- Ocean Blue #03719C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.036
- Dusky Blue #475F94 ΔE 0.037
Use #406C99 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.