#3F699A
Closest named color: Muted Blue (#3B719F). oklch(51.3% 0.091 253.3), rgb(63, 105, 154).
Aa
White text reads best on this color (5.67:1).
About this color
#3F699A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.091 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.023 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #3F699A |
| RGB | rgb(63, 105, 154) |
| HSL | hsl(212, 42%, 43%) |
| OKLCH | oklch(51.3% 0.091 253.3) |
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 #3F699A | 5.67:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #3F699A | 3.69:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #3F699A text on white | 5.67:1 | AA | Lc 78.2 | Fine for body text |
| #3F699A text on black | 3.69:1 | AA large text | Lc -23.5 | 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
#CEDAE9
oklch(88.4% 0.024 254)
-
Step 300
300
#ADC3DD
oklch(80.9% 0.044 252.7)
-
Step 400
400
#82A4CC
oklch(70.8% 0.07 252.8)
-
Step 500
500
#628CBF
oklch(63% 0.09 253.9)
-
Step 600
600
#4876AB
oklch(55.7% 0.097 253)
-
Step 700
700 (this color)
#3F699A
oklch(51.3% 0.091 253.3)
-
Step 800
800
#305177
oklch(42.8% 0.075 253)
-
Step 900
900
#2A4360
oklch(37.6% 0.059 253)
-
Step 950
950
#192738
oklch(26.9% 0.037 253.8)
#3F699A 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) | #556C9C | 0.029 |
| Deuteranopia (no green cones) | #496399 | 0.019 |
| Tritanopia (no blue cones) | #00747A | 0.078 |
| Achromatopsia (no color) | #676767 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F699A
#3F699A
oklch(51.3% 0.091 253.3)
- #865E22
#865E22
oklch(51.3% 0.091 73.8)
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 #3F699A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.023
- Denim #3B638C ΔE 0.027
- Dusky Blue #475F94 ΔE 0.028
- French Blue #436BAD ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.032
- Ocean Blue #03719C ΔE 0.037
- Dull Blue #49759C ΔE 0.038
- Peacock Blue #016795 ΔE 0.040
Use #3F699A 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.