#2F73A4
Closest named color: Muted Blue (#3B719F). oklch(53.5% 0.103 243.4), rgb(47, 115, 164).
Aa
White text reads best on this color (5.11:1).
About this color
#2F73A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.103 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.012 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #2F73A4 |
| RGB | rgb(47, 115, 164) |
| HSL | hsl(205, 55%, 41%) |
| OKLCH | oklch(53.5% 0.103 243.4) |
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 #2F73A4 | 5.11:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #2F73A4 | 4.10:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #2F73A4 text on white | 5.11:1 | AA | Lc 75.0 | Content text, not long reading |
| #2F73A4 text on black | 4.10:1 | AA large text | Lc -26.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A8C5DD
oklch(81% 0.046 243.3)
-
Step 400
400
#78A6CC
oklch(70.6% 0.075 244)
-
Step 500
500
#5390BE
oklch(63.1% 0.094 242.8)
-
Step 600
600 (this color)
#2F73A4
oklch(53.5% 0.103 243.4)
-
Step 700
700
#286693
oklch(49.2% 0.096 243.7)
-
Step 800
800
#235377
oklch(42.7% 0.079 244)
-
Step 900
900
#224560
oklch(37.7% 0.062 243.8)
-
Step 950
950
#152938
oklch(27.2% 0.038 242.4)
#2F73A4 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) | #5D74A6 | 0.048 |
| Deuteranopia (no green cones) | #4D69A3 | 0.037 |
| Tritanopia (no blue cones) | #007F84 | 0.074 |
| Achromatopsia (no color) | #6E6E6E | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F73A4
#2F73A4
oklch(53.5% 0.103 243.4)
- #965F24
#965F24
oklch(53.5% 0.102 63.9)
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 #2F73A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.012
- Flat Blue #3C73A8 ΔE 0.013
- Ocean Blue #03719C ΔE 0.025
- Nice Blue #107AB0 ΔE 0.025
- Dull Blue #49759C ΔE 0.028
- Sea Blue #047495 ΔE 0.033
- French Blue #436BAD ΔE 0.033
- Cerulean #457B9D ΔE 0.036
Use #2F73A4 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.